ISO-20502-2005.pdf
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1、 Reference number ISO 20502:2005(E) ISO 2005 INTERNATIONAL STANDARD ISO 20502 First edition 2005-08-15 Fine ceramics (advanced ceramics, advanced technical ceramics) Determination of adhesion of ceramic coatings by scratch testing Cramiques techniques Dtermination de ladhrence des revtements cramiqu
2、es par essai de rayure Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Qatar Petroleum/5943408001 Not for Resale, 04/12/2007 02:11:43 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 20502:2005(E) PDF disclaimer Th
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7、ster. 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 ii ISO 2005 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO L
8、icensee=Qatar Petroleum/5943408001 Not for Resale, 04/12/2007 02:11:43 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 20502:2005(E) ISO 2005 All rights reserved iii Contents Page Foreword iv 1 Scope . 1 2 Normative references. 1 3 Principle. 1 4 Apparatus and materials
9、 2 4.1 Scratch tester 2 4.2 Diamond stylus. 2 5 Preparation of test piece 3 5.1 General requirements. 3 5.2 Surface roughness, waviness and levelling 3 5.3 Specimen cleaning . 3 5.4 Coating-substrate parameters relevant to a test. 4 6 Test procedure 4 6.1 General. 4 6.2 Equipment preparation. 4 6.3
10、Environmental conditions 5 6.4 Scratching procedure. 5 6.4.1 General. 5 6.4.2 Progressive-force scratch test 5 6.4.3 Constant-force scratch test. 5 6.4.4 Multi-pass scratch test. 5 6.5 Scratch evaluation and critical normal-force determination 6 6.5.1 General. 6 6.5.2 Microscope observation 6 6.5.3
11、Acoustic emission (AE) and frictional force (FF) recording. 6 7 Repeatability and limits 7 8 Test report . 7 Annex A (normative) Procedure for calibration of a scratch testing system 12 Annex B (informative) Typical failure modes obtained in scratch testing. 19 Bibliography. 31 Copyright Internation
12、al Organization for Standardization Provided by IHS under license with ISO Licensee=Qatar Petroleum/5943408001 Not for Resale, 04/12/2007 02:11:43 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 20502:2005(E) iv ISO 2005 All rights reserved Foreword ISO (the Internation
13、al Organization for Standardization) is 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 e
14、stablished has the right to be represented 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 standard
15、ization. International Standards are drafted 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 vo
16、ting. Publication as an International Standard 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 su
17、ch patent rights. ISO 20502 was prepared by Technical Committee ISO/TC 206, Fine ceramics. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Qatar Petroleum/5943408001 Not for Resale, 04/12/2007 02:11:43 MDTNo reproduction or networking permitte
18、d without license from IHS -,-,- INTERNATIONAL STANDARD ISO 20502:2005(E) ISO 2005 All rights reserved 1 Fine ceramics (advanced ceramics, advanced technical ceramics) Determination of adhesion of ceramic coatings by scratch testing 1 Scope This International Standard describes a method of testing c
19、eramic coatings by scratching with a diamond stylus. During a test, either a constant or increasing force normal to the surface under test is applied to the stylus so as to promote adhesive and/or cohesive failure of the coating-substrate system. The test method is suitable for evaluating ceramic co
20、atings up to a thickness of 20 m and might also be suitable for evaluating other coating types and thicknesses. The International Standard is intended for use in the macro (1 to 100 N) force range. The procedures may also be applicable to other force ranges. However, appropriate calibration is essen
21、tial if the normal forces at which failure occurs are to be quantified. 2 Normative 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
22、 document (including any amendments) applies. ISO 4288, Geometric Product Specifications (GPS) Surface texture: Profile method Rules and procedures for the assessment of surface texture ISO 6508-2, Metallic materials Rockwell hardness test Part 2: Verification and calibration of testing machines (sc
23、ales A, B, C, D, E, F, G, H, K, N, T) ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories 3 Principle The scratch test is designed for the assessment of the mechanical integrity of coated surfaces. The test method consists of generating scratches with a sty
24、lus of defined shape (usually a diamond with a Rockwell C geometry) by drawing it across the surface of the coating-substrate system to be tested, either under a constant or progressive normal force (see Figure 1). Failure events are detected by direct microscopic observation of the scratch and some
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