BS-ISO-17081-2004.pdf
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1、BRITISH STANDARD BS ISO 17081:2004 Incorporating Corrigendum No. 1 Method of measurement of hydrogen permeation and determination of hydrogen uptake and transport in metals by an electrochemical technique ICS 77.060 ? Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 11:41:54 GMT+00:00 2006, Un
2、controlled Copy, (c) BSI BS ISO 17081:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 22 November 2004 ISBN 0 580 44812 6 National foreword This British Standard reproduces verbatim ISO 17081:2004 and implements it as the UK national sta
3、ndard. It supersedes BS 7886:1997 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee ISE/NFE/8, Corrosion of metals and alloys, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secre
4、tary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalo
5、gue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand th
6、e text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a fron
7、t cover, an inside front cover, the ISO title page, pages ii to iv, pages 1 to 16, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments 15698 Corrigendum No. 1
8、 Addition of supersession details BSI 28 October 2005 28 October 2005 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 11:41:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTERNATIONAL STANDARD ISO 17081 First edition 2004-11-01 Reference number ISO 17081:2004(E) Method of measurement of hydro
9、gen permeation and determination of hydrogen uptake and transport in metals by an electrochemical technique Mthode de mesure de la permation de lhydrogne et dtermination de labsorption dhydrogne et de son transport dans les mtaux laide dune technique lectrochimique BS ISO 17081:2004 Licensed Copy: s
10、heffieldun sheffieldun, na, Sun Nov 26 11:41:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 11:41:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iii Contents Page 1Scope 1 2Normative references 1 3Terms and definitions 1 4Symbols 3 5Principle 3
11、 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 11.2Analysis of steady-state current 10 11.3Analysis of permeation transient . 10 12Test r
12、eport 13 Annex A (informative) Recommended test environments for specific alloys . 14 Bibliography . 16 BS ISO 17081:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 11:41:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv Foreword ISO (the International Organization for Standardization) is
13、 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 represen
14、ted 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 dr
15、afted 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 S
16、tandard 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 17081 was prepare
17、d by Technical Committee ISO/TC 156, Corrosion of metals and alloys. BS ISO 17081:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 11:41:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 1 Method of measurement of hydrogen permeation and determination of hydrogen uptake and transport in metal
18、s by an electrochemical technique 1Scope 1.1This International Standard specifies a laboratory method for the measurement of hydrogen permeation and for the determination of hydrogen atom uptake and transport in metals, using an electrochemical technique. The term “metal” as used in this Internation
19、al Standard includes alloys. 1.2This International Standard describes a method for evaluating hydrogen uptake in metals, based on measurement of steady-state hydrogen flux. It also describes a method for determining effective diffusivity of hydrogen atoms in a metal and for distinguishing reversible
20、 and irreversible trapping. 1.3This International Standard gives requirements for the preparation of specimens, control and monitoring of the environmental variables, test procedures and analysis of results. 1.4This International Standard may be applied, in principle, to all metals for which hydroge
21、n permeation is measurable and the method can be used to rank the relative aggressivity of different environments in terms of the hydrogen uptake of the exposed metal. 2Normative references The following referenced documents are indispensable for the application of this document. For dated reference
22、s, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 17475:1), Corrosion of metals and alloys Electrochemical test methods Guidelines for conducting potentiostatic and potentiodynamic polarization measurement
23、s 3Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 charging method of introducing atomic hydrogen into the metal by exposure to an aqueous environment under galvanostatic control (constant charging current), potentiostatic control (constant ele
24、ctrode potential), free corrosion or by gaseous exposure 3.2 charging cell compartment in which hydrogen atoms are generated on the sample surface, including both aqueous and gaseous charging 1)To be published. BS ISO 17081:2004 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 11:41:54 GMT+00:
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