ISO INTERNATIONAL STANDARD 16962 Second edition 2017-02 Surface chemical analysis Analysis of zinc- and/or aluminium-based metallic coatings by glow-discharge optical-emission spectrometry Analyse chimique des surfaces - Analyse des revetements meétalliques a base de zinc et/ou d'aluminium par spectrométrie d'émission optique a décharge luminescente Reference number IS0 16962:2017(E) International Organization for Standardization @ IS0 2017 ZHEJIANG INST OF STANDARDIZATION C1 5956617 ted without license from IHS IS0 16962:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2017, Published in Switzerland 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 Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org Licensee-ZHEJIANG INST OF STANDARDIZAISQ 07 - All rights reserved Not for Resale, 2017/5/11 02:17:46 networking permited without license from IHS IS0 16962:2017(E) Contents Page Foreword ..V Introduction. ..vi 1 Scope. 2 Normative references 3 Terms and definitions 4 Principle ..1 5 Apparatus .2 5.1 Glow-discharge optical-emission spectrometer .2 5.1.1 General. .2 5.1.2 Selection of spectral lines. .2 5.1.3 Selection of glow-discharge source type. .2 Adjusting the glow-discharge spectrometer system settings .3 6.1 General .3 6.2 Setting the parameters of a DC source. ..4 6.2.1 Constant applied current and voltage. .4 6.2.2 Constant applied current and pressure ..5 6.2.3 Constant voltage and pressure .5 6.3 Setting the discharge parameters of an RF source 6.3.1 General. .6 6.3.2 Constant applied power and pressure .6 6.3.3 Constant applied power and Dc bias voltage .6 6.3.4 Constant effective power and effective RF voltage .7 6.4 Minimum performance requirements. ..7 6.4.1 General .7 6.4.2 Minimum repeatability 6.4.3 Detection limit ..8 7 Sampling. .9 8 Calibration .9 8.1 General 8.2 Calibration samples .10 8.2.1 General. 10 8.2.2 Brass calibration samples ..10 8.2.3 Zn-Al alloy samples. ..10 8.2.4 Low alloy iron or steel samples ..10 8.2.5 Stainless steel samples .10 8.2.6 Nickel alloy samples. ..10 8.2.7 Aluminium-silicon alloy samples .10 8.2.8 Aluminium-magnesium alloy samples. ..10 8.2.9 High-purity copper and zinc samples. .11 8.3 Validation samples and optional RMs for calibration 11 8.3.1 General .11 8.3.2 Zinc-nickel electrolytically coated RM .11 8.3.3 Zinc-iron electrolytically coated RM ..11 8.3.4 Zinc-aluminium hot dip coated RM ..11 8.3.5 Zinc-iron hot dip coated and annealed RM .11 8.4 Determination of the sputtering rate of calibration and validation specimens. .11 8.5 Emission intensity measurements of calibration specimens ..13 8.6 Calculation of calibration equations. .13 8.7 Validation using reference materials. ..13 8.7.1 General .13 8.7.2 Checking analytical accuracy using bulk reference materials .13 ii Licensee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 vided by IHS under license with ISC ed without license from IHS