ISO 8044:1989

IS0
INTERNATIONAL
STANDARD 8044
Second edition
Deuxihme 6dition
NORME
BTopoe MsAaHMe
1989-12-15
INTERNATIONALE
ME>KAYHAPOAHbIti
CTAHAAPT
Corrosion of metals and alloys - Vocabulary
Corrosion des m&aux et alliages - Vocabulaire
Kopp03~a MeTaJlJIOB I4 UlnaBOB - CJ’lOBapb
Reference number
Num&o de r+f&ence
HoMep CCblJlKM
IS0 8044 : 1989 (E/F/R)
MC0 8044 : 1989 (A/@/P)
IS0 8044 z 1989 (E/F/R)
MC0 8044 : 1989 (A/@/P)
Foreword
IS0 (the International Organization for Standardization) is a worldwide federation of
national standards bodies (IS0 member bodies). The work of preparing International
Standards is normally carried out through IS0 technical committees. Each member
body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, govern-
mental and non-governmental, in liaison with ISO, also take part in the work. IS0
collaborates closely with the International Electrotechnical Commission (IEC) on all
matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are circulated to
the member bodies for approval before their acceptance as International Standards by
the IS0 Council. They are approved in accordance with IS0 procedures requiring at
least 75 % approval by the member bodies voting.
International Standard IS0 8044 was prepared by Technical Committee ISO/TC 156,
Corrosion of metals and alloys.
This second edition cancels and replaces the first edition (IS0 8044 : 1986), for which
an addendum was prepared.
Annex A forms an integral part of this International
Standard. Annex B is for infor-
mation only.
0 IS0 1989
All rights reserved. No part of this publication may be reproduced or utilized in any form or by any
means, electronic or mechanical, including photocopying and microfilm, without permission in
writing from the publisher./Droits de reproduction reserves. Aucune partie de cette publication
ne peut etre reproduite ni utilisee sous quelque forme que ce soit et par aucun procede, electroni-
que ou mecanique, y compris la photocopie et les microfilms, sans I’accord ecrit de I’editeur.
International Organization for Standardization
Case postale 56 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland/lmprime en Suisse
ii
IS0 8044 : 1989 (E/F/R)
MC0 8044 : 1989 (A/@/P)
Avant-propos
L’ISO (Organisation internationale de normalisation) est une federation mondiale
d’organismes nationaux de normalisation (comites membres de I’ISO). L’elaboration
des Normes internationales est en general confide aux comites techniques de I’ISO.
Chaque comite membre in&es& par une etude a le droit de faire par-tie du comite
technique tree a cet effet. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec I’ISO participent egalement aux travaux. L’ISO col-
labore etroitement avec la Commission electrotechnique internationale KEI) en ce qui
concerne la normalisation Blectrotechnique.
Les projets de Normes internationales adopt& par les comites techniques sont soumis
aux comites membres pour approbation, avant leur acceptation comme Normes inter-
nationales par le Conseil de I’ISO. Les Normes internationales sont approuvees confor-
mement aux procedures de I’ISO qui requierent l’approbation de 75 % au moins des
comites membres votants.
La Norme internationale IS0 8044 a ete elaboree par le comite technique ISO/TC 156,
Corrosion des mhtaux et alliages.
Cette deuxieme edition annule et remplace la premiere edition (IS0 8044 : 1986),
laquelle a fait I’objet d’un additif.
L’annexe A fait partie integrante de la presente Norme internationale. L’an nexe B est
donnee uniquement a titre d’information.
IlpeAwnosHe
L/1co (Me>((RyHapOJJHafl OpraHPl3a~klFl l-l0 CTaH~apTl43a~Wl) RBflReTCR BCeMMpHOti
C#IeaepaqPleti HaLJMOHaflbHblX OpraHM3aqMti I-IO CTaHAapTM3aqWl (KOMMTeTOB-WleHOB
L/1co). Pa3pa6OTKa Me>ccRyHapOJjHblX CTaHAapTOB OCy~eCTBflReTCFl TeXHklcleCKVIMM
KOMMTeTaMM L/1co. Kax,qblti KOMMTeT-WleH, 3aPlHTepeCOBaHHblti B AeFlTenbHOCTM,
4flFl KOTOpOI;I 6bm CO3C(aH TeXHM’deCKMti KOMMTeT, MMeeT llpaB0 6blTb llpeJJCTaBJleH-
HblM B 3TOM KOMPlTeTe. MexAyHapO/JHble npaBMTeflbCTBeHHble Vl HenpaBVlTenb-
CTBeHHble OpraHM3a~Ml4, PlMelOL~Vle CBF13Vl C MC8, TaK)) pa6OTaX. YTO KaCaeTCR CTaHJJapTl43aqVWl B 06naCTM 3neKTpOTeXHMKl4, L/1co pa60TaeT
B TeCHOM COTpy/JHW-leCTBe C Me>lcJJyHapO~HOti 3neKTpOTeXHlNeCKOti KoMmctieLTI
(M3K).
npOeKTbl MemJJyHapO~HblX CTaHjJapTOB, npl4HFiTble TeXHMqeCKMMM KOMMTeTaMM,
paCCblnatOTCFl KOMMTeTaM-qneHaM Ha 0,406peHMe /JO MX yTBepxAeHl4R COBeTOM MC0
B KaLleCTBe Me~plyHapO,qHblx CTaHAapTOB. OHM 0~06pfNOTCF1 B COOTBeTCTBMM C llpO-
4eAypOl;r MCO, Tpe6)‘toll@i O,l$O6p@HMFI l-l0 MeHbLLler;l Mepe 75 O/O KOMUTeTOB-WeHOB,
npr/lHMMatoqi4x yqacTMe B ronocoBaHm4.
apO&Hbll;i CTaHAapT MC0 8044 6bin TeXHWIeCKmtI KOMMTeTOM
Mem~yH
MCOTTK 156, Kopp03m MemannoB u CnnaBOB
HaCToFi qee BTOpOe vr3jqaHue aHHympyeT M 3aMeHReT nepeoe MsAaHMe (MC0 8044 :
1986), K KOTOpOMy 6 on HeHLle.
bin0 pa3pa60TaHo jqon
IlpmomeHHe A cocTaBnR eT HeOT -beMneMyto qaCTb HaCTOFI tqero
CTaHAapTa. IlpMnomeHure 6 plaH0 TOnbKO flJ’lFl VlH@OpMa~W

IS0 8044 : 1989 (E/F/R)
MC0 8044 : 1989 (A/@/P)
Introduction
The definitions in this International Standard have been drawn up with the objective of
achieving a proper balance between precision and simplicity. The main objective of this
International Standard is to provide definitions that can be understood to have the
same meaning by all concerned. Some corrosion terms in present use have developed
through common usage and are not always logical. It has not, therefore, been possible
to define certain terms in the form they are used in some countries. Because of the oc-
casional conflicts between tradition and logic some definitions inevitably represent a
compromise.
An example of this kind of conflict is the term “corrosion”. This has been used to mean
the process, results of the process and damage caused by the process. In this Inter-
national Standard corrosion is understood to mean the process. Any detectable result
of corrosion in any part of a corrosion system is termed “corrosion effect”. The term
“corrosion damage” covers any impairment of the function of the technical system of
which the metal and the environment form a part. Consequently the term “corrosion
protection” implies that the important thing is to avoid corrosion damage rather than
to prevent corrosion, which in many cases is impossible and sometimes not necessary.
This International Standard contains, in annex A, a list of definitions of electro-
chemical terms.
IS0 8044 : 1989 (E/F/R)
MC0 8044 : 1989 (A/Q/P)
Introduction
L’objet de la presente Norme internationale est de definir des termes qui soient sim-
ples, precis, objectifs et non ambigus, acceptables ethymologiquement et compatibles
avec les domaines scientifiques voisins.
Le principe directeur d’elaboration de la presente Norme internationale a ete de ne rete-
nir qu’un seul terme et une seule definition par notion. Cet-tains termes de corrosion
actuellement en usage resultent d’us et coutumes qui ne sont pas toujours logiques.
D’ou I’impossibilite quelquefois de retenir les acceptions traditionnelles de certains ter-
mes dans differents pays, et le caractere inevitable de compromis de certaines defini-
tions qui cherchent a concilier la tradition et la logique.
Le meilleur exemple de ces contradictions est le terme de corrosion lui-meme, qui peut
signifier selon le cas le phenomene, certains resultats du phenomene ou les degats dus
au phenomene. La presente Norme internationale emploie le terme ((corrosion )) dans le
sens de phenomene de corrosion. Tout resultat decelable du phenomene de corrosion
sur tout ou partie d’un systeme de corrosion est appele ((manifestation de la
corrosion H, tandis que le terme (( degats dus a la corrosion )) qualifie toute degradation
fonctionnelle du systeme technique forme par le metal et son environnement. Le terme
((protection contre la corrosion)) impliquera done, par voie de consequence, que
I’essentiel est d’eviter les degats dus a la corrosion et non pas tant d’empecher la corro-
sion elle-meme, ce qui dans bien des cas est impossible et souvent n’est pas neces-
saire.
La presente Norme internationale donne, en annexe A, une liste et des definitions de
termes electrochimiques fondamentaux.
BBefieHHe
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CTOTOld. haBHaFl qen b HaCTOFlqerO Me>KflyHapOflHOrO CTaHplapTa - Bblpa60TaTb
0npefieneHiq CMblCn KOTOpblX noHMMancfl6bl OAvlHaKOBO BCeML1, KT~ MMM nonb3yeT-
CFI. iieKOTOpble TepMMHbl f-l0 KOpp03Ml4, ynOTpe6nfIeMble B HaCTOR~ee BpeMfl, pa3BW
nMcb ~13 06uxO&HOrO npi4MeHeHvw M He BcerAa norwiHbl. ll03~0~y qacTb TepMMHoB
6blnO HeB03MOxHO OnpeF(enVlTb B TOti C@OpMe, B KOTOpOlii OHM Tpa~M~MOHHO MCnOnb-
30BanLlCb B HeKOTOpblX CTpaHaX. ROCKOnbKy TpaAM4Mfl M nOrMKa l4HOrAa BCTynanM B
npoTi4Bopewe, HeKoTopble onpeAeneHi4R npecTaBnfltoT co6oti BblHyxfleHHblti KIM-
npohnl4c.
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nonb30Banucb, noapa3yMeBan npoqecc, pe3ynbTaTbl npoqecca v1 Bbl3blBaeMble npo-
qeCCOM nOBpe)KfieHMR. B HaCTOfIqeM Me2qyHapOAHOM CTaHflapTe nOA KOppO3vlel;l
noHuMaeTCR npoqecc. Jlto6oG1 Ha6ntoAaeMblLS1 pe3ynbTaT ~opp03w1 B nro6oGi qacw
KOppO3MOHHOlil CMCTeMbl 0603HaqaeTCfl TepMMHOM ,,KOpp03MOHHblti 3C+IC$IeKT“. Tep-
MMH ,,KOpp03MOHHafI IlOplra” OXBaTblBaeT nto6oe yXyAUleHl4e @yHK4MOHanbHblX
XapaKTepMCTMK TeXHWleCKOti CMCTeMbl, ‘4aCTFIMM KOTOpOti MOryT 6blTb MeTann M
cpeAa. KaK cneflcTBi4e 3Tor0, M B TepMMHe ,,3alqMTa 0~ ~opp03wV‘ noflpa3yMeBaeTcfi
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qT0 BO MHOl-MX CnyclaflX HeB03MOxH0, a MHOrAa M He HyxHO.
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INTERNATIONAL STANDARD
IS0 8044 : 1989 (E/F/R)
NORME INTERNATIONALE
MC0 8044 : 1989 (A/@/P)
MEXflYHAPOflHbllil CTAHAAPT
Corrosion of metals Corrosion des m&aux Kopp03w1 MeTUlJlOB
et alliages -
and alloys - bl CflJlaBOB - CJ’lOBapb
Vocabulary Vocabulaire
Domaine d’application 06nacTb IlplAMeHeHWI
1 Scope
La presente Norme internationale definit les i-iaCTOfI~Mti MWK~yHapOJjH bl 171 CTEiHAapT
This International Standard defines
Ol-lpe#SlFleT TePMMHbl, OTHOCfi~PleCfl K
terms relating to corrosion that are termes importants relatifs a la corrosion,
largement employ& dans les sciences et KOPP03MM M lUMPOK VlCnOJlb3yeMble B CO-
widely used in modern science and
BpeMeHHOti HayK In addition, some defi- techniques modernes. Certaines definitions
technology.
sont completees par de breves expli- OnpE?,4eJleHWl AOllOJlHeHbl KPaTKMMM l-lo-
nitions are supplemented with short
cations. FICHeHMFIMkl.
explanations.
NOTE - Tout le document applique les I-IPMMEYAHME - fl0 BCeMy AOKyMeHTy npklMe-
NOTE - Throughout the document IUPAC
conventions de I’IUPAC concernant le signe des HfleTCF1 CMCTeMa 3HaKOB SleKTpOflHOrO nOTeH-
rules for electrode potential signs are
qmana, npMHflTafl V~K>!~AKOM. TepMMH ,,MeTann“
applied. The term “metal” is also used to potentiels d’electrode ainsi que I’acceptation du
terme (( metal )) pour signifier egalement alliages BKflwiaeT B ce6R cnnasbi v1 flpyme MeTanmwe-
include alloys and other metallic materials.
et autres materiaux metalliques. cKme MaTepManbl.
Termes g6nQraux 06yHe TePMHH bl
2 General terms
2.01 corrosion : Physicochemical in- corrosion: Interaction physico-chimique KOF)P03HR: Q)M3MKO-XMMMWCKOE! B3BMMO-
teraction between a metal and its entre un metal et son milieu environnant AetiCTBW MWKAy MeTaJlJlOM l4 CpeflOlh, B
environment which results in changes in entrainant des modifications dans les pe3yJl bTaTe KOTOpOrO M3MeHFltOTCPI CBOlh-
the properties of the metal and which proprietes du metal et souvent une CTBa MeTanna I4 YaCTO npOVlCXOfll4T YXYJJ-
degradation fonctionnelle du metal lui- UleHMe @YHK~VlOHNlbHblX XapaKTepMCTMK
may often lead to impairment of the
function of the metal, the environment, meme, de son environnement ou du MeTanna, cpeflbi vuu4 wuo~atolqe1;1 ox
TeXHWleCKO~ CMCTeMbl.
or the technical system, of which these systeme technique constitue par les deux
form a part. facteurs.
IlPVlME~AHME - 3TO B3aMMOJ@lCTBlde 06biYHO
MMeeT 3JleKTpOXPlMWleCKylO npMpOAy.
NOTE - This interaction is usually of an NOTE - Cette interaction est generalement de
electrochemical nature. nature Blectrochimique.
2.02 corrosive agent: Substance agent corrosif: Substance qui, mise au KOpp03HBH blii areHT : BeuecTBO, KOTOpOe
which when in contact with a given contact d’un metal donne, reagit avec ce B CJlyWe KOHTaKTa C &iHHblM MeTaJlJlOM
metal will react with it. dernier. 6yAeT c HMM pearMposaTb.
2.03 corrosive environment: En- milieu environnant corrosif : Milieu Koppo3tdBHafl cpeAa: Cpefla, coAepxatqafl
vironment that contains one or more contena nt un ou plusieurs agents corrosifs. fl0 MeHbl.U&l MefIt? OAMH KOPP03MBHblii
corrosive agents. arekiT.
2.04 corrosion system : System systeme de corrosion: Systeme form6 KOppO3HOHHa~ CHCTeMa : CPlCTeMEl, BKJl l0-
consisting of one or more metals and par un ou plusieurs metaux et les differents clatotyafl OAMH MnM 6onee MeTannoB M we
all parts of the environment which elements du milieu environnant qui ont une YaCTM Cpefibl, KOTOPble MOrYT BJlMFlTb Ha
influence corrosion. influence sur la corrosion. KOPP03Mt0.
NOTE - Part of the environment may be
NOTE - Par elements du milieu environnant, on flPLlMEYAHME - !-iOA qaCTbl0 CpeAbl nOHM-
coating, surface layer, additional electrode, entend les revetements, couches supet-ficielles, MaeTCR nOKpblTkle, nOBepXHOCTH biti CJlOlil, AO-
etc. electrodes additionnelles, etc. nOJlHMTeJlbHbl@l NleKTpOA M T./J.
1 ’
Is0 8044 : 1989 (E/F/R)
MC0 8044 : 1989 (A/@/P)
2.05 corrosion effect : Change in manifestation de corrosion : Modifica- Kopp03bdoHHbli4 sc@#eKT: MshdeHew4e B
tion, sous l’effet de la corrosion, d’un ele- nro6ol;r qaCTVI KOpp03MOHHO~ CMCTeMbl,
any par-t of the corrosion system caused
ment du systeme de corrosion. Bbl3BaHHOe KOppO3ureti.
by corrosion m
2.06 corrosion damage : Corrosion deggt dQ a la corrosion : Manifestation KOppO3HOHHafl noprla : KoppowoHHbil;i
de la corrosion jugee prejudiciable a la KOTOpbl r;l paC~eHPlBaeTCfl KaK
effect which is considered detrimental =P@eK-r,
BpeJJHblti AnH @yHKqMOHanbHblX XapaKTe-
to the function of the metal, the en- fonction du metal, a son environnement ou
au systeme technique constitue par les pMcTMK MeTanna, cpe&bi Mm4 Bmo~atolqefi
vironment or the technical system, of
MX TeXHWeCKOti CMCTeMbl.
deux facteurs.
which these form a part.
2.07 corrosion product : Substance produit de Irrosion : Substance formee KOpp03HH : BeqecTBO, o6pasoBaB-
nPwYKT
pe3yn bTaTe KOpp03VlVI
formed as a result of corrosion. sous I’eff et la corrosion. weem B
2.08 scale: Solid layer of corrosion calamine: Couche solide de produits de OKaJlHHa: TBepAbll;l CnOl;l npOAyKTOB KOp-
products formed on a metal at high corrosion formee sur un metal a haute tem- p031414 06pa3OBaBtUwtiCFI Ha MeTanne npM
perature. BbicoKoL;i TeMnepaType.
temperature.
The term “scale” is also used in NOTE - Le terme <(tar-We)) est employ6 pour IlPMME~AHME - AHrJIMtiCKML;1 TepMMH ,,SCale“ Pl
NOTE -
some countries for deposits of hardness salt qualifier les depots de calcaire laisses par une C#IpaHL(y3CKVlL;1 TepMVlH Jat-tre” i4cnonb3ytoTcfl B
eau dure. HeKOTOpblX CTpaHaX M AJlfJ 0603HaqeHIAfI OCaA-
from water.
KOB COJler;l XeCTKOCTM M3 BOAbl.
rouille : Produit visible de corrosion, a base pXaB’4HHa: BPIJqPIMbie llpOflyKTbl KOppO-
2.09 rust : Visible corrosion products
consisting mainly of hydrated iron d’oxydes de fer hydrates. 3w4, cocTofltqvre B OCHOBHOM ~3 rqqpaw-
posawibix OKCMAOB xene38.
oxides.
2.10 cathodic control : Limitation of contrdle cathodique : Limitation de la KaToAH biGi KoHTponb : Orpawwet4~e CKO-
the corrosion rate by the rate of the vitesse de corrosion par la vitesse de la pOCTPl KOpp03MVl CKOpOCTbtO KaTOAHO1;1 pe-
aK4MM (CM. TepMVlH A.03).
cathodic reaction (see term A.03). reaction cathodique (voir terme A.03).
2.11 anodic control : Limitation of contr6le anodique : Limitation de la aHoRH blii KoHTponb : Orpawwewe cKo-
pOCTl4 KOpp03MM CKOpOCTblO aHOflHOl;l pe-
the corrosion rate by the rate of the vitesse de corrosion par la vitesse de la
anodic reaction (see term A.04). reaction anodique (voir terme A.04). aKqL1M (CM. TepMMH A.04).
2.12 ohmic control: Limitation of contr6le par chute ohmique: Limitation OMHWCKHii KOHTpOnb: OrpaHVlWHPle CKO-
de la vitesse de corrosion par la resistance pOCTVl KOpp03MM OMMqeCKVIM COllpOTMBne-
the corrosion rate by the ohmic
resistance of the corrosion cell. electrique de la cellule de corrosion. HMeM KOpp03MOHHOrO 3neMeHTa.
2.13 diffusion control: Limitation contrale par diffusion: Limitation de la ~HC#@y3HOHHblii KOHTpOnb: OrpaHWleHMe
vitesse de corrosion par la vitesse de diffu-
of the corrosion rate by the diffusion CKOpOCTM KOpp03MM CKOpOCTblO ~PlCjJCjIIy-
rate of corrosive agents to or corrosion sion des agents corrosifs vers la surface 3MM KOpp03MBH blX al-eHTOB K ROBepXHOCTM
products from the metal surface. metallique ou par celle des produits de cor- MeTanna w-w npodyKToB ~opp03vw OT Hee.
rosion depuis la surface metallique.
contrale mixte : Limitation de la vitesse de ClWUlaHHblii KOHTpOnb: OrpaHlNeHlAe CKO-
2.14 mixed control: Limitation of
the corrosive rate by the simultaneous corrosion par I’action simultanee de plu- pOCTM KOpp03Mt4, Bbl3BaHHOe OAHOBpeMeH-
sieurs types de facteurs de controle (voir HblM JJel;iCTBuleM AByX VlnVl 6onee KOHTpO-
action of two or more controlling fac-
tors (see terms 2.10 to 2.13). termes 2.10 a 2.13). nMpytO~MX @aKTOpOB (CM. TepMMHbl 2.10-
2.13).
2.15 corrosion depth: Perpendicu- profondeur de corrosion: Distance per- rny6HHa KO~~O~HH: PaccToflwe no nep-
lar distance between a point on the sur- pendiculaire mesuree entre un point de la neqqmympy ~0 TOL~KM Ha ~oppofl~pyto-
weti nosepxHocm4 MeTanna 0T ero nepeo-
face of a metal affected by corrosion surface du metal affectee par la corrosion
and the original surface of the metal. et la surface initiale du metal. Halian bHOC;1 nOBepXHOCTVl.
2.16 corrosion rate: Corrosion ef- vitesse de corrosion: Effet de la corro- llOKa3aTeJlb CKOpOCTH KOpp03HH : KOppO-
3MOHHblfi @@eKT B MeTanne 38 eflMHM~y
feet on a metal per unit of time. sion sur un metal par unite de temps.
BpeMeHPl.
NOTE - The type of corrosion rate to be NOTE - L’expression retenue de la vitesse de
used will depend on the technical system corrosion a utiliser depend du systeme consider-6 llPVlME’-lAHME - Tm noKa3arens CKO~OCTIA
~opp03m, noAnexai.quti npvrMeHeHi40, 3aBm4T
and on the type of corrosion effect. Thus et du type de corrosion. Cette vitesse de corro-
IS0 8044 : 1989 (E/F/R)
MC0 8044 : 1989 (A/@/P)
sion peut etre exprimee par I’augmentation de la OT XapaKTepa TeXHMqeCKOti CMCTeMbl M TMna
corrosion rate may be expressed as an in-
profondeur de corrosion par unite de temps, la KOpp03MOHHOrO @@eKTa. CKOpOCTb KOpp03MM
crease in corrosion depth per unit of time, or
masse de metal transform6 en produits de corro- MOXHO, HanpMMep, Bbrpa3wTb qepe3 y6enweHMe
the mass of metal turned into corrosion pro-
sion par unite de surface et par unite de temps, rny6vrHbl KOpp03MM 38 eAVlHulqy BpeMeHL1, MIlM
ducts per unit area of surface or per unit of
etc. L’effet de la corrosion peut varier au tours qepes Maccy MeTanna, nepexoARqer0 B npoAyK-
time, etc. The corrosion effect may vary with
du temps et n’est pas necessairement le meme Tbl ~opp03w4 Ha eAr4Hvruy nnowaAr4 nosepxHo-
time and may not be the same at all points of
en tout point de la surface se corrodant. De ce CTM 38 eAMHM4y BpeMeHPl M T.R. KOpp03MOHHblL;1
the corroding surface. Therefore, reports of
fait, les vitesses de corrosion reportees devront 3C@$IeKT MOXeT paCnpefleJlflTbCf4 BO BpeMeHVl M
corrosion rates should be accompanied by
etre accompagnees d’informations sur la nature, n0 nOBepXHOCTPl HepaBHOMepHO. n03TOMy, npM-
information on the type, time dependency
la variation au tours du temps et la localisation BO)Jfl nOKa3aTefl b CKOpOCTLl KOpp03MM, HeO6XO-
and location of the corrosion effect.
de l’effet de la corrosion. #AM0 COnpOBOXflaTb er0 VlH@OpMaqPleti 0 TMne,
BpeMeHHOr;l 3aBMCVIMOCTM L’l nOBepXHOCTHOM
pacnpeAeneHw4 Kopp03vroHHoro 3c@$eKTa.
KOPP03HOHHa~ CTOiiKOCTb: CnOCO6HOCTb
resistance 6 la corrosion : Capacite d’un
2.17 corrosion resistance : Ability
metal a resister 8 la corrosion dans un MeTaJlfla npOTMBOCTOfITb KOpp03MM B AaH-
of a metal to withstand corrosion in a
HOL;1 KOpp03IlOHHOti CVlCTeMe.
systeme de corrosion donne.
given corrosion system.
corrosovite; agressivite : Capacite d’un KOPP03HBHOCTb: CnOCO6HOCTb CpeAbl Bbl-
2.18 corrosivity : Ability of an en-
3blBaTb KOpp03MK) B flaHHOr;r KOppOSVrOH-
milieu environnant a corroder un systeme
vironment to cause corrosion in a given
donne. HOti CMCTeMe.
corrosion system.
KPHTHWCKUI BJlaXHOCTb : OTHOCMTeJl b-
2.19 critical humidity: The value of humidite critique : Valeur de l’humidite
relative humidity of an atmosphere relative d’une atmosphere au-dela de HaFl BJlaxHOCTb aTMOC@epbl, Bblllle KOTO-
poti npomxo~v~~ pe3Koe BospacTaHHe no-
above which there is a sharp increase in laquelle se produit une augmentation brus-
the corrosion rate of a given metal. que de la vitesse de corrosion d’un metal Ka3aTeflFl CKOpOCTM KOpp03MVl AaHHOrO
MeTanna.
donne.
2.20 corrosion protection : Modifi- protection contre la corrosion : Modifi- 3aU@lTa 01 KOPP03HH: BHeCeHMe B KOppO-
cation d’un systeme de corrosion permet- 3MOHHyt0 CMCTeMy I43MeHeHM& yMeHbl.UatO-
cation of a corrosion system so that cor-
rosion damage is mitigated. tant d’attenuer les degats dus a la corro- ql/lX KOpp03MOHHyK) l-lopqy.
sion.
taux de protection: Pourcentage de CTeWHb 3alJJHTbl: BbIpaIKeHHOe B npOqeH-
2.21 degree of protection: The
percentage reduction in corrosion rate reduction de la vitesse de corrosion d’un TaX yMeHbUleHl4e CKOpOCTl4 KOpp03Ml4, JJO-
achieved by corrosion protection. type donne, obtenu par une protection CTVlrHyTOe IlyTeM 3allJMTbl OT KOpp03MVI.
anticorrosion.
-
NOTE - All types of corrosion present are i-lPLlME YAHklE PaCCMOTpeH 1410 noAnexaT
to be considered. Bee Han MqH ble TVlnbl KOpp03MM.
NOTE - Tous les de corrosion presents
types
sont a considerer.
2.22 temporary protection : Cor- protection temporaire: Protection con- BpeMeHHNl 3ayblTa : 3al.l.QdTa OT KOpp03Wl,
rosion protection intended to last only tre la corrosion censee ne durer qu’un inter- paC’-WlTaHHa~ TOJlbKO Ha OrpaHMYeHHblti
for a limited time. valle de temps limit& CpOK.
NOTE - La protection temporaire est utilisee,
NOTE - Temporary protection is used, for I-lPVlME~AHV?E - BpeMeHHaR 3awMTa npMMe-
example, during storage and transportation par exemple, pendant le stockage ou le transport
HfleTcfl, HanpvrMep, Ha nepMoA xpaHeHr4fl M TpaH-
des produits metalliques ou encore pendant
of metal products or during shut-down of cnopTMpoBaHMe MeTannor43flenw7 ww Ha ne-
equipment. I’arret d’une installation. pMOJ( OCTaHOBKM 060py~OBaHMFL
2.23 protective layer: Layer of couche protectrice: Couche de subs- 3a~HTHblii CJlOk Cnol;t BeNecTBa, o6pa-
tance qui se forme sur la surface d’un metal
substance formed on a metal surface 3y1o1414Gw1 Ha noBepxHocTi4 MeTanna v1 or-
which decreases the corrosion rate. et diminue sa vitesse de corrosion. paHWlVlBaKI~l4ti CKOpOCTb KOpp03MM.
NOTE - Such layers may be applied (see NOTE - De telles couches peuvent etre appli- I-lPVlME~AHL’lE
- TaKMe cnoM MOI-yT HaHOCMTb-
term 2.25) or arise spontaneously, for q&es (voir terme 2.25) ou se former naturelle- CR (CM. TepMPlH 2.25) MJlPl B03HMKaTb CaMOnpOM3-
example by corrosion. ment, par exemple par corrosion. BOJlbHO, HanpPlMep, B pe3yIlbTaTe KOpp03MM.
2.24 weathering steel: A low-alloy aTMOCC@pOCTOiiKafl CTUlb : t-hmKonerMpo-
acier patinable : Acier de construction
structural steel which develops a rust peu allie qui, lorsqu’il est expose 8 certaines BaHHaFl KOHCTpyKqMOHHafi CTafl b, Ha KOTO-
layer with improved protective proper- pOlii npl4 OTKpblTOM 3KCnOHMpOBaHMM B He-
atmospheres naturelles, se recouvre, au
ties, when freely exposed in certain tours du temps, d’une couche de rouille KOTOpblX eCTeCTBeHHblX aTMOC@epaX 06-
pa3yeTCfI pxaBWHa C nOBbll.UeHHblMM 3a-
natural atmospheres. ayant des proprietes protectrices amelio-
&es. WMTHblMM CBOtiCTBaMk
IS0 8044 : 1989 (E/F/R)
MC0 8044 : 1989 (A/@/P)
2.25 protective coating : Layer(s) of revetement protecteur : Couche ou 3aqbdTHoe noKpbiTb4e: Cnoti MUM cr4creMa
ensemble de couches de materiau depose CflOeB BeqeCTB, HaHOCMMblX Ha nOBepX-
material applied to a metal surface to
HOCTb MeTanna C qenbl0 3aqMTbl OT KOp-
sur une surface metallique pour la proteger
provide corrosion protection.
contre la corrosion. p03w4.
KOHBepCHOHHOe nOKpblTHe : nOKpblTMe,
2.26 conversion coating : Coating couche de conversion : Revetement pro-
tecteur obtenu par la reaction entre un 06pa30satiHoe f3 pesyn bTaTe peaKqw4 Me-
produced by the reaction of a metal or
manna Mnr4 ero npoAylcror3 KOPPO~MM c KOM-
metal ou ses produits de corrosion et un
of its corrosion products with com-
environnement choisi (voir IS0 2080 : nOHeHTaMM cneutian bH0 nOAO6paHHOti
ponents of a selected environment (see
cpeAbl (CM. MC0 2080 : 1981).
1981).
IS0 2080 : 1981).
2.27 anodic oxide coating : Rrotec- couche d’oxyde anodique : Revetement atioAHo-orwckroe noKpbiTHe : 3awMrt-ioe,
tive, decorative or functional coating, protecteur, decoratif ou fonctionnel, forme AeKOpaTMBHOe MnM CjIyHK~lAOHanbHOe KOH-
BepCMOHHOe nOKpblTMe, 06pa30BaHHOe ny-
formed by conversion of the surface of par la conversion de la surface d’un metal
au tours d’un processus electrolytique TeM 3neKrponr4rr4qecKoro oKr4cneHtifl no-
a metal in an electrolytic oxidation pro-
cess (see IS0 2080 : 1981). d’oxydation (voir IS0 2080 : 1981). BepxHocTM Meranna. (CM. MC0 2080 : 1981).
inhibiteur de corrosion : Substance chi- bWH6HTOp KOpp03HH: XVIMMqeCKOe Bewe-
2.28 corrosion inhibitor : Chemical
substance which decreases the cor- mique qui, presente a une concentration CTBO, KOTOpOe, llpMCyTCTByfl B KOpp03VlOH-
appropriee dans un systeme de corrosion, HOti CMCTeMe B OnpeAeneHHOti KOHL@HTpa-
rosion rate when present in the cor-
diminue la vitesse de corrosion sans chan- u~r4, cHMmaeT noKa3aTen b CK~~~CTM Kop-
rosion system at a suitable concen-
ger notablement la concentration de tout p03Ml46e3 Cy~eCTBeHHOrO M3MeHeHMR KOH-
tration, without significantly changing
the concentration of any other corrosive autre agent corrosif. ~eHTpaqwl n to6oro Apyroro KOpp03MBHO-
ro areHTa.
agent.
NOTE - L’inhibiteur de corrosion est generale-
ment efficace 8 faible concentration. Dans des
- L/1HWl6PITOp KOpp03MVl06blllHO
NOTE - A corrosion inhibitor is generally ef- I-lPMMEYAHME
applications commerciales, les additifs sont par-
fective in a small concentration. In commer- 3@I@eKTMBeH B ManOti KOHqeHTpaQMM. B flpO-
fois nommes ((inhibiteurs)).
cial applications additives are sometimes MblUJneHHOCTM MHWI6PlTOpaMM MHOI-Aa Ha3blBa-
named as inhibitors. lOT M /JpyWle ~06aBKM.
JIeTyWi HHrH6HTOp ~Opp03w1: khirtd6W
2.29 volatile corrosion inhibitor: inhibiteur de corrosion volatil : Inhibi-
teur qui peut atteindre la surface d’un metal TOP, KOTOpbll;l MOxeT 4OCTVlraTb nOBepX-
An inhibitor that can reach the metal
sous forme de vapeur. H~CTM MeTanna B BMAe napa.
surface in the form of a vapour.
2.30 passivation: Decrease of car- passivation: Reduction de la vitesse de naccwsaqtm: IloHMmeHMe noKa3arena l
corrosion par formation d’un produit de CKOpOCTVl KOppO3lWl llpVl 06pa30BaHWl
rosion rate by the formation of a cor-
rosion product on the metal surface. corrosion sur la surface metallique. npOAyKTa KOpp03MM Ha flOBepXHOCTVl Me-
Tanna.
courant de passivation : Valeurs du cou-
2.31 passivation curent : Corrosion TOK naCCb4Ba~LM: KOpp03VlOHHblti TOK npl4
current at the passivation potential. rant de corrosion au potentiel de passiva- noTeHuMane naccMBaqw4.
tion.
2.32 passivator : Corrosive agent agent passivant : Agent corrosif n&es- naccHBaTop : Koppo3MBHblti areHT, Heo6-
saire a la formation d’un produit de corro- XOAVlMbll;l AnFi 06pa30BaWfl IlaCCMBl/lpytO-
necessary for formation of a passivating
corrosion product. sion passivant. qero npoflyKTa ~opp03~~.
2.33 &at passif; passivite: Etat d’un systeme naCCHBHOe COCTOFIHHB; naCCHBHOCTb: CO-
passive state, passivity : State
de corrosion resultant de sa passivation.
of a corrosion system resulting from CTOflHMe KOppOSMOHHOti CMCTeMbl, AOCTM-
passivation. raeMoe B pesyn bTaTe naccMBaQi4u.
NOTE - L’etat passif se rappotte generalement
au metal.
NOTE - The passive state usually refers to ilPLlME~AHl4E - naCCMBHOe COCTOFlHMe o6blq-
the metal. HO OTHOCF~T K Meranny.
2.34 de-aeration: Removal of air d&aeration: Elimination de I’air d’un
Aeaspaqbw : YAaneHr4e f303Ayxa ~3 cpeAbi.
environnement.
from environment.
I-lPMMEqAHME - Ecm y~anFilOT TOnbKO KMCnO-
pot, TO 6onee npMeMneM TepMMH ,,06ecKMcno-
If only oxygen is removed the term NOTE - Le terme de d&oxygenation est plus
~VOTE -
approprie pour les operations au tours desquel- pOxMBaHMe“.
“deoxygenation” is more appropriate n
les seul I’oxygene est enleve.
IS0 8044 : 1989 (E/F/R)
MC0 8044 : 1989 (A/@/P)
2.35 protective atmosphere : Ar- atmosphere PrOteCtriCe : Atmosphere 3auyTHafi aTMoc@epa : McKyccTseHHafi
artificielle dont la corrosivite a ete r&luite aTMOC@epa, KOpp03MBHOCTb KOTOpOti no-
tificial atmosphere with corrosivity
par elimination ou exclusion d’agents cor- HMmeHa nyTeM yAaneHr4fl t4nM McKnroqe-
reduced by the removal or exclusion of
HMFI KOpp03VIBHblX al-eHTOB MJlM BBeJJeHPlfl
corrosive agents or by the addition of rosifs ou par addition d’inhibiteurs de cor-
rosion. MHrM6MTOpOB KOpp03MM.
corrosion inhibitors.
Types de corrosion Tm bl KOPP03HH
3 Types of corrosion
3.01 electrochemical corrosion : corrosion electrochimique : Corrosion 3neKTpoxHMmecKaR ~opp03w1: Koppo-
3r4fl, BKntoqatoqafi no MeHbujell Mepe okay
Corrosion involving at least one elec- mettant en jeu au moins une reaction
d’electrode. 3JleKTpOAHytO peaKqMtO.
trode reaction.
cor- corrosion non electrochimique; corro- He3JleKTpOXHMWleCKafl KOpp03HFI; XHMH-
3.02 non-electrochemical
rosion; chemical corrosion (dep- sion chimique (a eviter): Corrosion ne r(eCKafl KOpp03HFl (He peKOMeHAyeTCR) :
mettant pas en jeu de reaction d’electrode. Kopp03m, MAyqaFI 6e3 ZleKTpOfiHblX pe-
recated) : Corrosion not involving elec-
trode reaction. aKqwl.
3.03 gaseous corrosion: Corrosion COrrOSiOn gazeuse: Corrosion dont ra3oBaR ~opp0314(1 l Kopp03~~ npM KOTO-
with gas as the only corrosive agent and I’agent unique est un gaz, aucune phase pOti F-83 flBJlfleTCFI &MHCTBeH;blM KOppO-
aqueuse n’etant observee a la surface du 3MBHblM areHTOM kl Ha nOBepXHOCTM Me-
without any aqueous phase on the sur-
face of the metal. metal. TaJ’iJla HeT BOAHOti CjIa3bl.
3.04 atmospheric corrosion : Cor- corrosion atmospherique : Corrosion aTMOC@epHaFI KOpp03Hfl: Kopp03m, B KO-
pour laquelle I’atmosphere terrestre a tem- TOpOI;I ponb CpeAbl MrpaeT 3eMHaFI aTMO-
rosion with the earth’s atmosphere at
ambient temperature as the corrosive perature ambiante est I’environnement cor- C@epa B ee CO6CTBeHHOM MHTepBane TeM-
rosif. nepaTyp bl.
environment.
corrosion souterraine : Corrosion de nolq3eMHaR ~Opp03~~: Kopposm MeTTana
3.05 underground corrosion : Cor-
rosion of buried metals, soil being the materiaux enter&, les terrains constituant B 3apblTOM COCTOFIHMM, npVl KOTOpOI;;I nOq-
I’environnement corrosif l
corrosive environment. Ba (I-pyHT) FlBJlFleTCFl KOpp03MBHOti CpeAOti.
NOTE - Le terme terrain inclut non seulement
NOTE - The term soil includes not only the nPL/1MEqAHL/IE - TepMMH ,,noL(Ba (rpyHT)“ BKnto-
naturally occurring material but also any les milieux naturels mais aussi d’autres mate- qaeT He TOnbKO eCTeCTBeHHyt0 CpeAy, HO VI ,qpy-
riaux tels que ballast, materiaux de remplissage,
other material, ballast, backfill, etc., used to me MaTepvranbl: GannacT, 3acblnKy M T.A., MC-
cover a structure. etc., utilises pour recouvrir une structure. nonb3yeMble Am yKpblTm KOHCT~~K~MM.
3.06 microbial corrosion: Cor- corrosion microbienne : Corrosion asso- 6b10~0pp03~1; nmwp06Hafl KOpp03HFI : KOP-
ciee a I’action de micro-organismes pre- p03MR, CBFl3aHHaFI C flel;iCTBUeM MMKpOOp-
rosion associated with the action of
micro-organisms present in the cor- sents dans le systeme de corrosion. raHM3MOB, npMCyTCTBytO~MX B KOpp03MOH-
HOti CVICTeMe.
rosion system.
3.07 localized corrosion : Corrosion corrosion localisee : Corrosion interve- MeCTHaFl KOpp03HFI : Kopp03~~ 0TAeI-l bHblX
at discrete sites of the metal surface ex- nant sur des sites discrets de la surface qacTeti MeTannwecKoFi
nOBepXHOCTM,
posed to the corrosive environment. d’un metal expose a un environnement cor- KOHTaKTklpytOlqeiil C KOpp03MBHOti CpeAOk
rosif.
NOTE - Localized corrosion may result in, nPMMEqAHME - Pe3yn bTaTOM MeCTHOlil KOppO-
for example, pits, cracks, grooves, etc.
3MM MOryT FIBnFITbCFI, HanpMMep, RSBbI, TpewMHbl,
NOTE - La corrosion localisee peut, par exem-
yrny6neHm M T.A.
ple, apparaitre sous formes de piqures, fissures,
sillons, etc.
3.08 uniform corrosion: Corrosion
corrosion uniforme; corrosion gene- paBHOMepHaR KOpp03HFI: Kopp03m, CKO-
proceeding at almost the same rate over rale : Corrosion progressant approximati- pOCTb KOTOpOL;1 npaKTWeCKM O~MHaKOBa
the whole surface of the metal exposed
vement 8 la meme vitesse sur la totalite de Ha Bcer;i noBepxHocTu MeTanna, HaxoAw
to the corrosive environment. la surface d’un metal don& en contact IqelilCfl B KOHTaKTe C KOpp03MBHOti CpeflOti.
avec un milieu environnant corrosif.
corrosion par piqures: Corrosion se tra-
3.09 pitting corrosion : Corrosion IlHTTHHrOBafl KOpp03HFI: Kopp03wq BeAy-
resulting in pits, i.e. cavities extending duisant par I’apparition de piqures (c’est-a- tl@fl K 06pa30BaHMiO F13B, T.e. nOJIOCTefi B
dire de cavites) progressant a partir de la
from the surface into the metal. MeTanne, HawHalolqtdxcfl c noBepxHocTu.
surface du metal.
IS0 8044 : 1989 (E/F/R)
MC0 8044 : 1989 (A/@/P)
corrosion caverneuse : Corrosion asso- IlJWleBaR KOpp03Wl: Kopp0314~1, B bl3BaHHaFl
3.10 crevice corrosion : Corrosion
ciee a la presence d’une ouverture etroite iianr44MeM y3Koro 0TBepcTm wm sasopa M
associated with, and taking place in, or
immediately around, a narrow aperture ou d’un degagement, et qui se localise a t4Ayqafl BHYT~M t4nH HenOCpeflCTBeHHO
cet endroit meme ou a son voisinage imme- BOKpyr HMX.
or clearance.
diat.
corrosion sous depot: Corrosion asso- nOJ)OCa~KOBafI KOpp03HFl: Koppo~m, B bl3-
3.11 deposit corrosion : Corrosion
associated with, and taking place ciee a la presence d’un depot de produits BaHHaR HanVlqVleM OCaJJKa npOAyKTOB KOp-
p03~14 Mm4 Apyroro BehecTBa M vrAylqafi
under, or immediately around, a deposit de corrosion ou autre substance et qui se
localise sous le depot lui-meme ou a son llOJJ HMM MnVl HenOCpe4CTBeHHO BOKpyr
of corrosion products or other sub-
voisinage immediat. Hero.
stance.
Cor- corrosion ti la ligne d’eau: Corrosion KOpp03Hfl no saTepnbdtibw : Kopp03m
3.12 water-line corrosion :
BAOnb rpaHl4qbl ra3++WlfiKOCTb, Bbl3BaH-
rosion along, and as a consequence of resultant de la presence d’une interface
gaz-liquide et qui se localise a ce niveau. Hafl HamweM 3ToL;1 rpaHi4qbl.
the presence of, a gas/liquid boundary.
3.13 selective corrosion : Corrosion corrosion selective : Corrosion d’un m6upaTenbHafl ~opp031~ : Kopposm
cnnasa, npvl ~0T0p0I?I ero KoMnoHeHTbl
of an alloy whereby the components alliage dont les differents constituants rea-
gissent en proportion differente de leur BCTynatOT B peaKuMl0 B COOTHOlJJeHMM,
react in proportions which differ from
OTnMYHOM OT MX COOTHOUJeHMfI B CnnaBe.
their proportions in the alloy. teneur.
corrosion intergranulaire : Corrosion nmmKpimTannbdTtiafl KOpp03Hfl: Kopposm,
3.14 intergranular corrosion: Cor-
rosion in or adjacent to the grain bound- localisee dans les joints de grain d’un metal vlgyqafl no rpaHi4qaM 3epeH MeTanna tini4
ou a leur voisinage immediat. HenOCpeQCTBeHHO BAOn b rpaHMubl.
aries of a metal.
weld corrosion : Corrosion as- corrosion au joint de soudure: Corro- KOpp03HFI CBapHOrO COeP(bdHeHwI: Koppo-
3.15
sion associee a la presence d’un joint soude 3m, CBR3aHHaFI c Hani4weM CBapHoro
sociated with the presence of a welded
joint and taking place in the weld or its et qui se Iocalise au niveau de ce joint ou a COe@4HeHMfl M MAywan no WBy mi4 B6nM3M
son voisinage immediat. Hero.
vicinity.
3.16 knife-line corrosion: Cor- corrosion en lame de couteau: Corro- HOxeBaFI KOpp03HFI : Koppo~m, B pe3yn b-
sion conduisant a I’apparition d’une fente TaTe ~0TOp0r;r B03HMKaeT y3KMl7l HaRpes no
rosion resulting in a narrow slit in or ad-
Mm4 BAOnb rpaHMubl OCHOBHOrO M Hannas-
jacent to the filler/parent boundary of a etroite a I’interface (ou a son voisinage
immediat) metal de base/metal d’apport neHHor0 MeTanna B cBapHoM Mm4 naflHoM
welded or brazed joint.
d’un joint soude ou bras6 et qui se localise CoeAMHeHMM.
le long de cette fente ou parfois a son voisi-
nage immediat.
3.17 layer corrosion: Corrosion of corrosion feuilletante: Corrosion des CJlOeBaFi KOpp03HR: KOpp03MR BHyTpeHHMX
internal layers of wrought metal, oc- couches internes d’un metal corroye, con- cnoes JJe@OpMVlpOBaHHOrO MeTanna,
casionally resulting in exfoliation, i.e. duisant parfois a une exfoliation, c’est-a- MHorAa npt4BoaRwafi K paccnaMBaHm0, T.e.
detachment of unattacked layers. dire au detachement des couches non atta- oTfleneHm0 HenopaxeHHblx cnoeB.
quGes.
NOTE - Exfoliation is generally oriented in IlPMMEYAHIlE - Paccnamawe 06biwo npo-
the direction of rolling, extrusion or principal MCXO&MT B HanpaBfEHMM IlpOKaTKM, 3KCTPY3MVl
NOTE - L’exfoliation est gkn&alement orientee
deformation. MIlM IlpWlMy~eCTBeHHOti #Z~OpMa~Wl.
dans le sens du laminage, de I’extrusion et de la
deformation principale.
3.18 dezincification of brass: Selec- dezincification du laiton : Corrosion 06eC~MHKOBaHbIe JWTyHH : M36MpaTenbHafl
selective du laiton dans laquelle le zinc est KOpp03MFl naTyHM C llpeVlMylqeCTBeHHblM
tive corrosion of brass resulting in pref-
erential removal of zinc. elimine preferentiellement. yAaneHr4eM uMHka.
3.19 graphitic corrosion : Selective
graphitisation : Corrosion selective de la rpac@IrHpytoqaA KOpp03m : u36wpaTen b-
corrosion of grey cast iron, resulting fonte grise eliminant preferentiellement les Hafi ~opp03m ceporo qyryHa c npeMMyuje-
in preferential removal of metallic con-
constituants metalliques et laissant subsis- cTBeHHblM yAaneHi4eM MeTannwecKMx co-
stituents, leaving graphite. ter le graphite. cTaBmto~~x i4 coxpaHeHMeM rpa@MTa.
IS0 8044 : 1989 (E/F/R)
MC0 8044 : 1989 (A/@/P)
3p03HOHHaF1 KOpp03H F1 : llpoqecc, COBMe-
corrosion-erosion : Phenomene resultant
3.20 erosion-corrosion : A process
de l’action conjuguee de la corrosion et de ~atouyt7 KOpp03MK) c 3 posr/ler;l.
and
involving conjoint corrosion
I’erosion.
erosion.
I-lPklMEYAHME - 3P03MOHHWl KOPP03Mfl B03-
MoxHa, tianpr4Mep :
in, for NOTE - La corrosion-erosion s’o bserve,
Erosion-corrosion occur Par
NOTE - may
exemple :
example, -
B Tpy6ax C BblCOKOti CKOpOCTbtO TeCfeHMFl
XVI~KOCTM;
- - dans les canalisations oti le s’ecoule
pipes with high fluid flow velocity;
8 vitesse elevee;
-
BHaCOCaXMTpy6OflpOBOfl ,aX, TpaHCilOpTPl-
-
pumps and pipe lines carrying fluid
PyIO~VlX XMJJKOCTb C a6pa3M BHOL;1 B3BeCblO.
- dans les pompes et les tuyauteries trans-
containing abrasive particles in suspen-
pot-tant des fluides contenant des particules
sion.
abrasives en suspension.
corrosion-cavitation : Phenomene resul- KaBHTa~HOHHafl KOpp03HFI: npOL@CC, COB-
3.21 cavitation corrosion: A pro-
Meu(aiouyri ~opp03mo c KasmaLyetA.
tant de I’action conjuguee de la corrosion
cess involving conjoint corrosion and
et de la cavitation.
cavitation.
IlPMMEYAHME - KaBMTa~MOHHOti KOPP03MM
IlO~BepXeH bl, HaIlpMMep, l+HTpO6eXH ble HaCO-
NOTE - La corrosion-cavitation s/observe, par
NOTE - Cavitation corrosion may occur, for
Cbl LA QE6Hble BMHTbl Cy)JOB.
exemple, dans les pompes rotatives et les helices
example, in rotary pumps and on ships’ pro-
pellers. de navires.
C#IpeTTHHr=KOpp03H~: npOqeCC, COBMe-
3.22 fretting corrosion: A process corrosion-frottement : Phenomene resul-
lQatOllQ4ti KOpp03MlO C KOne6aTenbHblM
involving conjoint corrosion and oscil- tant de I’action conjuguee de la corrosion
latory slip between two surfaces in con- et de I’usure, cette usure &ant provoquee npOCKanb3blBaHMeM AByX KOHTaKTMpylO-
qvlx noBepxHocTeti.
tact. par un mouvement oscillatoire de glisse-
ment de deux surfaces en contact.
NOTE - Fretting corrosion may occur, for FlPMMEqAHME - @>peTTL’lHFKOPP03MF1 MOXeT
example, at mechanical joints in vibrating LlMeTb MWTO, Hal-lpulMep, B MeXaHMqeCKMX COe-
- Ce type de corrosion s’observe, par
NOTE
structures. flMHeHMFlX BM6PMPYtOllJMX KOHCTPYKl@.
exemple, au niveau des joints mecaniques de
structures vibrantes.
3.23 corrosion fatigue: A process fatigue-corrosion : Phenomene resultant Koppo3HotiHafI ycTanocTb : npoqecc, COB-
involving conjoint corrosion and alter- de I’action conjuguee de la corrosion et Metqatouyri Kopp03wo co 3HaKonepeMew
d’une deformation cyclique du metal. ~oi;l jqeaopMagi4el;i MeTanna.
nating straining of the metal.
NOTE - La fatigue-corrosion peut s’observer IlPMME~AHME - KOpPO3MOHHBfI yCTEiJlOCTb MO-
NOTE - Corrosion fatigue may occur when
a metal is subjected to cyclic straining in a dans un metal soumis a une contrainte cyclique xer B03HwHyTb r3 TOM cnylrae, KorAa MeTann
dans un milieu corrosif. Elle peut conduire a une noABepraeTcfl qwnwecKoti Aec@opMaqw B
corrosive environment. Corrosion fatigue
may lead to cracking. fissuration. KOPP03MBHOlil Cpefle. KOppO3MOHHaFI YCTaJlOCTb
MOXeT IlpMBeCTM K PaCTpeCKMBaHMtO.
3.24 stress corrosion : A process in- corrosion sous contrainte: Phenomene ~opp03wi nope HanpmeHueM : llpoqecc,
volving conjoint corrosion and straining resultant de I’action conjuguee de la corro- COBMe~atOlqldl KOpp03MtO C ~eC$IIOpMlApO-
of the metal due to residual or applied sion et d’une deformation du metal sous BaHMeM MeTanna IlO4 BnMRHVleM OCTaTO’d-
stresses. l’effet de contraintes appliquees ou resi- HblX HallpfVKeHVlti MnM BHeUlHer;r Harpy3KVl.
duelles.
NOTE - Le terme ((corrosion sous tension)),
souvent utilise, est impropre.
3.25 stress corrosion cracking : fissuration sous contrainte: Fissuration KOpp03HOHHOe paCTpeCKHBaHHe nOA Ha-
Cracking due to stress corrosion. due a la corrosion sous contrainte. npm+ceHideM : PacTpecKMBaHMe Bcneg-
cTBMe ~opp03w1 nojq HanpflxeHueM.
3.26 hydrogen embrittlement : A fragilisation par I’hydrogene : Pheno- BojqopoAHoe oxpynwBaHb4e : ilpoqecc, Be-
process resulting in a decrease of the
mene de reduction de la ductilite ou de la fiylql4lii K noHvlmeHvlto BF13KOCTM w-w nna-
toughness or ductility of a metal due to tenacite d’un metal d2r a I’absorption ~TWIH~~TM MeTanna BcnegcTBMe nornoqe-
absorption of hydrogen. d’hydrogene.
HMFl BO~OpO~a.
NOTE - Hydrogen embrittlement often ac- NOTE - La fragilisation par I’hydrogene
TlPI’lME~AHME - BO~OpO~H blM OXpyn WBa-
companies hydrogen formation, for example
s’accompagne souvent d’un degagement HMeM qaCT0 conpoBoxflaeTcf4 06pa30BaHPle BO-
by corrosion or electrolysis, and may lead to d’hydrogene, par corros
...