ISO-17081-2004.pdf
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1、INTERNATIONAL STANDARD ISO 17081 First edition 2004-11-01 Reference number ISO 17081:2004(E) ISO 2004 Method of measurement of hydrogen permeation and determination of hydrogen uptake and transport in metals by an electrochemical technique Mthode de mesure de la permation de lhydrogne et dterminatio
2、n de labsorption dhydrogne et de son transport dans les mtaux laide dune technique lectrochimique Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 03:09:41 MDTNo reproduction or n
3、etworking permitted without license from IHS -,-,- ISO 17081:2004(E) ii ISO 2004 All rights reserved PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embe
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6、lem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2004 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 microfi
7、lm, without permission in writing from either ISO at the address below or ISOs 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 copyrightiso.org Web www.iso.org Published in Switzerland Copyright I
8、nternational Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 03:09:41 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 17081:2004(E) ISO 2004 All rights reserved iii Content
9、s Page 1Scope 1 2Normative references 1 3Terms and definitions 1 4Symbols 3 5Principle 3 6Samples 4 6.1Dimensions 4 6.2Preparation 5 7Apparatus . 5 8Test environment considerations . 7 9Test procedure . 8 10Control and monitoring of test environment . 9 11Analysis of results . 10 11.1General . 10 11
10、.2Analysis of steady-state current 10 11.3Analysis of permeation transient . 10 12Test report 13 Annex A (informative) Recommended test environments for specific alloys . 14 Bibliography . 16 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NAS
11、A Technical Standards 1/9972545001 Not for Resale, 04/19/2007 03:09:41 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 17081:2004(E) iv ISO 2004 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation of national s
12、tandards 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
13、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 gi
14、ven 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
15、 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 17081 was prepared by Technical Committee ISO/TC 156,
16、Corrosion of metals and alloys. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 03:09:41 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL S
17、TANDARDISO 17081:2004(E) ISO 2004 All rights reserved 1 Method of measurement of hydrogen permeation and determination of hydrogen uptake and transport in metals by an electrochemical technique 1Scope 1.1This International Standard specifies a laboratory method for the measurement of hydrogen permea
18、tion and for the determination of hydrogen atom uptake and transport in metals, using an electrochemical technique. The term “metal” as used in this International Standard includes alloys. 1.2This International Standard describes a method for evaluating hydrogen uptake in metals, based on measuremen
19、t of steady-state hydrogen flux. It also describes a method for determining effective diffusivity of hydrogen atoms in a metal and for distinguishing reversible and irreversible trapping. 1.3This International Standard gives requirements for the preparation of specimens, control and monitoring of th
20、e environmental variables, test procedures and analysis of results. 1.4This International Standard may be applied, in principle, to all metals for which hydrogen permeation is measurable and the method can be used to rank the relative aggressivity of different environments in terms of the hydrogen u
21、ptake of the exposed metal. 2Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
22、 ISO 17475:1), Corrosion of metals and alloys Electrochemical test methods Guidelines for conducting potentiostatic and potentiodynamic polarization measurements 3Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 charging method of introducing at
23、omic hydrogen into the metal by exposure to an aqueous environment under galvanostatic control (constant charging current), potentiostatic control (constant electrode potential), free corrosion or by gaseous exposure 3.2 charging cell compartment in which hydrogen atoms are generated on the sample s
24、urface, including both aqueous and gaseous charging 1)To be published. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 03:09:41 MDTNo reproduction or networking permitted without
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