Fine ceramics (advanced ceramics, advanced technical ceramics). Determination of the abrasion resistance of coatings by a micro-scale abrasion test (ISO 26424:2008)
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ISO 26424:2008 specifies a method for measuring the abrasive wear rate of ceramic coatings by means of a micro-scale abrasion wear test based on the well-known crater-grinding technique used for coating thickness determination in ISO 26423. The method can provide data on both coating and substrate wear rates, either by performing two separate tests or by careful analysis of the data from a single test series. The method can be applied to samples with planar or non-planar surfaces, but the results analysis described in the text applies only to flat samples. For non-planar samples, a more complicated analysis, possibly requiring the use of numerical methods, is required.
Tämän julkaisun valmistelusta Suomessa vastaa Metalliteollisuuden Standardisointiyhdistys ry, puh. 09 19 231 (vaihde).
Sisällysluettelo
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Significance and use
5 Principle
6 Apparatus and materials
6.1 Test system
6.2 Test balls
6.3 Abrasive slurry
6.4 Measurement of crater dimensions
7 Preparation of test pieces
8 Test procedure
8.1 Different types of test
8.2 Type A test: no perforation of coating
8.3 Type B test: perforation of coating
9 Analysis of results
9.1 Type A test: no perforation of coating
9.2 Type B test: perforation of coating
10 Test reproducibility, repeatability and limits
10.1 Reproducibility and repeatability
10.2 Limits
11 Test report
Annex A Measurement of coating thickness (informative)
ISO 3290-1:2008 Rolling bearings -- Balls -- Part 1: Steel balls
ISO/IEC 17025:2005 General requirements for the competence of testing and calibration laboratories
ISO 3290-1:2008 Rolling bearings -- Balls -- Part 1: Steel balls
ISO/IEC 17025:2005 General requirements for the competence of testing and calibration laboratories