ISO INTERNATIONAL STANDARD 17081 Second edition 2014-06-01 Method of measurement of hydrogen permeation and determination of hydrogen uptake and transport in metals by an electrochemical technique Méthode de mesure de la perméation de I'hydrogene et détermination de I'absorption d'hydrogene et de son transport dans les métaux a I'aide d'une technique électrochimique Reference number ISO 17081:2014(E) ISO @IS02014 ed without license from IHS Not for Resale IS0 17081:2014(E) COPYRIGHTPROTECTEDDOCUMENT @ISO2014 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested 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 [email protected] Web www.iso.org Published in Switzerland @ IS0 2014 - All rights reserved No reproduction or networking permited without license from IHS Not for Resale IS0 17081:2014(E) Contents Page Foreword ..iv 1 Scope .1 2 Normative references ..1 3 Terms and definitions 4 Symbols ..2 5 Principle ..3 6 Samples. ..4 6.1 Dimensions. .4 6.2 Preparation ..5 7 Apparatus ..6 8 Test environment considerations ..8 9 Test procedure. ..9 10 Control and monitoring of test environment. .11 11 Analysis of results. .11 11.1 General 11 11.2 Analysis of steady-state current .11 11.3 Analysis of permeation transient ..12 12 Test report ..14 Annex A (informative) Recommended test environments for specific alloys ..16 Bibliography .19 iii ithout license from IHS Not for Resale