BS EN ISO 20502:2016
Current
The latest, up-to-date edition.
Fine ceramics (advanced ceramics, advanced technical ceramics). Determination of adhesion of ceramic coatings by scratch testing
Hardcopy , PDF
English
31-05-2016
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Foreword
1 Scope
2 Normative references
3 Principle
4 Apparatus and materials
5 Preparation of test piece
6 Test procedure
7 Repeatability and limits
8 Test report
Annex A (normative) - Procedure for calibration of a scratch
testing system
Annex B (informative) - Typical failure modes obtained in scratch
testing
Bibliography
Explains a method of testing ceramic 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.
| Committee |
RPI/13
|
| DevelopmentNote |
Supersedes BS EN 1071-3. (05/2016)
|
| DocumentType |
Standard
|
| Pages |
40
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This International Standard describes a method of testing ceramic 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 coatings up to a thickness of 20 ȝm and might also be suitable for evaluating other coating types and thicknesses.
The International Standard is intended for use in the macro (1 to 100N) force range. The procedures may also be applicable to other force ranges. However, appropriate calibration is essential if the normal forces at which failure occurs are to be quantified.
| Standards | Relationship |
| EN ISO 20502:2016 | Identical |
| ISO 20502:2005 | Identical |
| ISO/IEC 17025:2005 | General requirements for the competence of testing and calibration laboratories |
| ISO 6508-2:2015 | Metallic materials — Rockwell hardness test — Part 2: Verification and calibration of testing machines and indenters |
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