ISO INTERNATIONAL STANDARD 23737 First edition 2021-08 Fine ceramics (advanced ceramics, advanced technical ceramics) - Methods for evaluating wear and friction characteristics of fine ceramic thin films under dry and humid conditions Ceramiques techniques-Methodes pourI'évaluation des caracteristiques d'usure et de frottement des films minces de céramiques techniquesen conditions seches et humides Referencenumber IS0 23737:2021(E) ISO @ ISO 2021 IS023737:2021(E) COPYRIGHTPROTECTEDDOCUMENT IS02021 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may below or ISo's member body in the country of the requester. ISO copyright office CP 40i : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Email: [email protected] Website: www.iso.org Published in Switzerland ii IS02021-Allrights reserved IS023737:2021(E) Contents Page Foreword V Introduction vi 1 Scope. .1 2 Normativereferences .1 3 Terms and definitions .1 4 Test specimens. .2 5 Measurement principle .2 6 Testing room environment .2 7 Wear formation test apparatus .3 8 Test specimenpreparation .5 9 55 Testspecimenpretreatment. 9.1 General. 9.2 Test specimen cleaning 5 9.3 Test specimen drying 5 10 Environmental conditions for the formation ofthe wearand theevaluation of friction coefficient. 6 10.1 General 6 10.2 Dry environment. 6 10.3 High-humidity environment 6 11 Wear motion conditions 6 11.1 Reciprocating wear conditions 6 11.2 Rotatingdiscwearconditions 7 12 Evaluationofweartrackcross-sectionformed onthinfilmtest specimen surface .8 13 Evaluation of volume of worn portion on indenterball surface .8 13.1 General. .8 13.2 Observationofindenterballwearsurfaceprofile 8 13.3 Calculation ofvolumeofwornportionon indenterball surface 9 14 Investigations of morphology and elemental distribution maps for wear tracks on thin film test specimens and worn sections on indenterballs 9 14.1 General. 9 14.2 Observationofthemorphology 9 14.3 Investigationsofelemental distributionmaps 10 .10 15 Calculation of friction coefficient. 16 Testing procedures. .10 16.1 Measurement of thickness ofthinfilm test specimen .10 16.2 Thin film test specimen preparation and cleaning .10 16.3 Settingofwearformationconditions..... .10 16.3.1 General.. .10 16.3.2 Wearformation conditions fora dry environment. 11 16.3.3 Wearformation conditionsforahigh-humidity environment 11 .11 16.4 Wear formation. Startofwearformation onthethinfilmtestspecimen 16.4.1 11 16.4.2Frictionforcemeasurement. .11 16.5 Evaluation of thinfilmtest specimen surfaceand indenterball surfaceafterwear ..11 formation 16.5.1 ..11 General. 16.5.2 Measurement of weartrackcross-section onthinfilmtest specimen .11 IS0 2021 - All rights reserved iii