ISO 11877:2008
(Main)Hardmetals - Determination of silicon in cobalt metal powders - Photometric method
Hardmetals - Determination of silicon in cobalt metal powders - Photometric method
ISO 11877:2008 specifies a photometric method to be used for the determination of the mass fraction of silicon in the range of 20 µg/g to 300 µg/g in cobalt metal powders.
Métaux durs — Dosage du silicium dans les poudres métalliques de cobalt — Méthode photométrique
General Information
- Status
- Published
- Publication Date
- 18-May-2008
- Technical Committee
- ISO/TC 119/SC 4 - Sampling and testing methods for hardmetals
- Drafting Committee
- ISO/TC 119/SC 4 - Sampling and testing methods for hardmetals
- Current Stage
- 9093 - International Standard confirmed
- Start Date
- 22-Sep-2022
- Completion Date
- 13-Dec-2025
Overview
ISO 11877:2008 specifies a precise photometric method for determining the mass fraction of silicon in cobalt metal powders, specifically within the range of 20 µg/g to 300 µg/g. This international standard is essential for professionals in powder metallurgy and hardmetal industries to accurately assess silicon content, ensuring quality control and material performance. Developed by ISO Technical Committee ISO/TC 119, this method emphasizes accuracy and reproducibility in silicon measurement using advanced chemical treatment and photometric analysis.
Key Topics
- Scope: Establishes a standardized photometric procedure for quantifying silicon in cobalt metal powders.
- Principle: Silicon tetrafluoride is generated by treating the sample with a mixture of acids, then distilled into a boric acid and sodium molybdate solution. The resulting molybdatesilicate complex is extracted using methyl-isobutylketone, and its absorbance is measured photometrically.
- Reagents and Equipment: Utilizes high-purity reagents such as hydrofluoric acid, nitric acid, perchloric acid, boric acid, and sodium molybdate. Equipment must be silicon-free materials such as PTFE, PP, and PE to avoid contamination.
- Procedure: Involves acid treatment, distillation under nitrogen flow, phase extraction, and photometric measurement at a wavelength of 345 nm, ensuring precise determination of silicon content.
- Calibration and Quality Control: Includes preparation of blank and calibration solutions for accurate absorbance measurement and result calculation.
- Result Reporting: Results are expressed as the mass fraction of silicon, reported as the mean value rounded to 0.001% by mass, supporting precise quality documentation.
Applications
ISO 11877:2008 is critical for industries relying on cobalt-based hardmetals where silicon content influences material properties such as hardness, wear resistance, and overall durability. Typical applications include:
- Powder Metallurgy: Ensuring raw cobalt powders meet stringent silicon contamination limits before processing into hard metals.
- Quality Assurance: Routine testing during production to monitor silicon levels and maintain compliance with industry specifications.
- Research and Development: Analysis of innovative cobalt metal powder formulations for advanced hardmetal products.
- Supplier Certification: Validating silicon content in cobalt metal powders from different suppliers for purchase decisions.
This standard supports maintaining consistent material quality, which is vital in producing high-performance cutting tools, wear parts, and other cobalt-based hardmetal components.
Related Standards
ISO 11877:2008 complements and references other ISO standards focused on measurement accuracy and precision to enhance reliability in testing:
- ISO 5725 Series: Covers accuracy (trueness and precision) of measurement methods and results, assisting laboratories with repeatability and reproducibility of silicon determination.
- ISO/TC 119 Standards: Other powder metallurgy standards covering sampling and testing methods for hardmetals.
- Material Characterization Standards: Related protocols for elemental analysis in metals using various chemical and instrumental methods, bolstering comprehensive quality control frameworks.
Adhering to ISO 11877:2008 allows organizations to implement a validated, internationally recognized photometric method for silicon analysis optimized for cobalt metal powders, thereby enhancing product quality and operational efficiency in metallurgical processes.
Keywords: ISO 11877:2008, silicon determination, cobalt metal powders, photometric method, hardmetals, powder metallurgy, silicon mass fraction, chemical analysis, metallurgical testing, quality control standards.
Frequently Asked Questions
ISO 11877:2008 is a standard published by the International Organization for Standardization (ISO). Its full title is "Hardmetals - Determination of silicon in cobalt metal powders - Photometric method". This standard covers: ISO 11877:2008 specifies a photometric method to be used for the determination of the mass fraction of silicon in the range of 20 µg/g to 300 µg/g in cobalt metal powders.
ISO 11877:2008 specifies a photometric method to be used for the determination of the mass fraction of silicon in the range of 20 µg/g to 300 µg/g in cobalt metal powders.
ISO 11877:2008 is classified under the following ICS (International Classification for Standards) categories: 77.160 - Powder metallurgy. The ICS classification helps identify the subject area and facilitates finding related standards.
ISO 11877:2008 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 11877
First edition
2008-06-01
Hardmetals — Determination of silicon in
cobalt metal powders — Photometric
method
Métaux durs — Dosage du silicium dans les poudres métalliques de
cobalt — Méthode photométrique
Reference number
©
ISO 2008
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.
© ISO 2008
All rights reserved. Unless otherwise specified, 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 either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2008 – All rights reserved
Contents Page
Foreword. iv
1 Scope .1
2 Principle.1
3 Reagents.1
4 Apparatus and equipment .2
5 Preparation of acid mixture for sample treatment .2
6 Preparation of solutions for receiver.2
7 Procedure .2
8 Photometric determination .3
9 Preparation of blank and calibration solutions .3
10 Expression of the result.3
11 Test report .3
Bibliography .4
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
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, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 11877 was prepared by Technical Committee ISO/TC 119, Powder metallurgy, Subcommittee SC 4,
Sampling and testing methods for hardmetals.
iv © ISO 2008 – All rights reserved
INTERNATIONAL STANDARD ISO 11877:2008(E)
Hardmetals — Determination of silicon in cobalt metal
powders — Photometric method
1 Scope
This International Standard specifies
...
МЕЖДУНАРОДНЫЙ ISO
СТАНДАРТ 11877
Первое издание
2008-06-01
Сплавы твердые. Определение
содержания кремния в порошке
металлического кобальта.
Фотометрический метод
Hardmetals — Determination of silicon in cobalt metal powders —
Photometric method
Ответственность за подготовку русской версии несёт GOST R
(Российская Федерация) в соответствии со статьёй 18.1 Устава ISO
Ссылочный номер
©
ISO 2008
Отказ от ответственности при работе в PDF
Настоящий файл PDF может содержать интегрированные шрифты. В соответствии с условиями лицензирования, принятыми
фирмой Adobe, этот файл можно распечатать или смотреть на экране, но его нельзя изменить, пока не будет получена
лицензия на установку интегрированных шрифтов в компьютере, на котором ведется редактирование. В случае загрузки
настоящего файла заинтересованные стороны принимают на себя ответственность за соблюдение лицензионных условий
фирмы Adobe. Центральный секретариат ISO не несет никакой ответственности в этом отношении.
Adobe — торговый знак Adobe Systems Incorporated.
Подробности, относящиеся к программным продуктам, использованным для создания настоящего файла PDF, можно найти в
рубрике General Info файла; параметры создания PDF оптимизированы для печати. Были приняты во внимание все меры
предосторожности с тем, чтобы обеспечить пригодность настоящего файла для использования комитетами – членами ISO. В
редких случаях возникновения проблемы, связанной со сказанным выше, просим информировать Центральный секретариат
по адресу, приведенному ниже.
ДОКУМЕНТ ЗАЩИЩЕН АВТОРСКИМ ПРАВОМ
© ISO 2008
Все права сохраняются. Если не указано иное, никакую часть настоящей публикации нельзя копировать или использовать в
какой-либо форме или каким-либо электронным или механическим способом, включая фотокопии и микрофильмы, без
предварительного письменного согласия ISO по адресу ниже или членов ISO в стране регистрации пребывания.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Опубликовано в Швейцарии
ii © ISO 2008 – Все права сохраняются
Содержание Страница
Предисловие .iv
1 Область применения .1
2 Принцип.1
3 Реактивы .1
4 Аппаратура и оборудование .2
5 Приготовление смеси кислот для обработки образца .2
6 Приготовление растворов для приемника.2
7 Методика .2
8 Фотометрическое определение.3
9 Приготовление контрольного и калибровочных растворов.3
10 Выражение результатов .3
11 Протокол испытания.3
Библиография.4
Предисловие
Международная организация по стандартизации (ISO) является всемирной федерацией национальных
организаций по стандартизации (комитетов-членов ISO). Разработка международных стандартов
обычно осуществляется техническими комитетами ISO. Каждый комитет-член ISO, заинтересованный
в деятельности, для которой был создан технический комитет, имеет право быть представленным в
этом комитете. Международные организации, правительственные и неправительственные, имеющие
связи с ISO, также принимают участие в работах. ISO непосредственно сотрудничает с
Международной электротехнической комиссией (IEC) по всем вопросам электротехнической
стандартизации.
Международные стандарты разрабатываются в соответствии с правилами, приведенными в
Директивах ISO/IEC, Часть 2.
Основная задача технических комитетов состоит в подготовке международных стандартов. Проекты
международных стандартов, одобренные техническими комитетами, рассылаются комитетам-членам
на голосование. Их опубликование в качестве международных стандартов требует одобрения, по
меньшей мере, 75 % комитетов-членов, принимающих участие в голосовании.
Следует иметь в виду, что некоторые элементы настоящего документа могут быть объектом патентных
прав. ISO не должен нести ответственность за идентификацию какого-либо одного или всех патентных
прав.
ISO 11877 разработан Техническим комитетом ISO/TC 119, Порошковая металлургия, Подкомитетом
SC 4, Методы отбора образцов и испытаний твердых сплавов.
iv © ISO 2008 – Все права сохраняются
МЕЖДУНАРОДНЫЙ СТАНДАРТ ISO 11877:2008(R)
Сплавы твердые. Определение содержания кремния в
порошке металлического кобальта. Фотометрический
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...