ISO 17942:2014

INTERNATIONAL ISO
STANDARD 17942
First edition
2014-08-15
Fine ceramics (advanced ceramics,
advanced technical ceramics) —
Methods for chemical analysis of
boron nitride powders
Céramiques techniques — Méthodes pour l’analyse chimique de
poudres de nitrure de bore
Reference number
©
ISO 2014
© ISO 2014
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ii © ISO 2014 – All rights reserved

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 General rules in chemical analysis . 1
4 Analysis items . 1
5 Sampling, weighing, and drying of sample . 2
5.1 Sampling . 2
5.2 Weighing . 2
5.3 Drying . 2
6 Reporting analytical values . 3
6.1 Number of analyses. 3
6.2 Blank test . 3
6.3 Evaluation of analytical values . 3
6.4 Expression of analytical values . 3
7 Determination methods of total boron . 3
7.1 Classification of determination methods . 3
7.2 Fusion-acidimetric titration method . 4
7.3 Fusion-ICP-OES . 6
8 Determination methods of free boron . 8
8.1 Classification of determination methods . 8
8.2 Sulfuric acid digestion-ICP-OES and spectrophotometry . 9
8.3 Nitric acid digestion-ICP-OES .11
8.4 Methanol extraction-borate separation-ICP-OES and spectrophotometry .12
9 Determination methods of total nitrogen .16
9.1 Classification of determination methods .16
9.2 Acid pressure decomposition-distillation separation-acidimetric titration method .17
9.3 Fusion-ammonia separation-acidimetric titration method .22
9.4 Inert gas fusion-thermal conductivity method .22
10 Determination method of silicon .26
10.1 Determination method.26
10.2 Principle .26
10.3 Reagents.26
10.4 Apparatus and instrument .27
10.5 Amount of sample .27
10.6 Operation .27
10.7 Blank test .27
10.8 Drawing calibration curves .27
10.9 Calculation .28
11 Determination methods of aluminium, cadmium, calcium, chromium, cobalt, copper, iron,
lead, magnesium, manganese, nickel, titanium, vanadium, and zinc .28
11.1 Classification of determination methods .28
11.2 Acid pressure decomposition-ICP-OES .28
11.3 Fusion-ICP-OES .31
12 Determination methods of sodium and potassium .34
12.1 Classification of determination methods .34
12.2 Acid pressure decomposition-AAS.35
12.3 Acid pressure decomposition-FES .37
12.4 Acid pressure decomposition-ICP-OES .39
13 Determination methods of carbon .41
13.1 Classification of determination methods .41
13.2 Combustion (resistance furnace)-IR absorption spectrometry .42
13.3 Combustion (RF furnace)-conductometry .45
13.4 Combustion (RF furnace)-IR absorption spectrometry .47
13.5 Combustion (resistance furnace)-coulometry .49
13.6 Combustion (resistance furnace)-gravimetry .49
13.7 Combustion (resistance furnace)-conductometry .49
14 Determination method of Oxygen .49
14.1 Determination method.49
14.2 Inert gas fusion-IR absorption spectrometry .49
15 Test report .52
Annex A (informative) List of commercial certified reference materials .53
Annex B (informative) Analytical results obtained from a round robin test .54
Annex C (informative) Spectral lines for ICP-OES .58
Bibliography .59
iv © ISO 2014 – All rights reserved

Foreword
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The committee responsible for this document is ISO/TC 206, Fine ceramics.
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