EN 1071-12:2010

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Significance and use
5 Principle
6 Apparatus and materials
7 Preparation of test pieces
8 Test procedure
9 Repeatability and limits
10 Test report
Annex A (informative) - Issues related to dynamic
        measurements in reciprocating wear testing
Annex B (informative) - Methods for the determination
        of coating properties likely to be relevant to
        coating performance in a reciprocating wear test
Annex C (informative) - Examples of common wear mechanisms
Annex D (informative) - Determination of volume loss from
        the pin using profilometry
Annex E (informative) - Determination of wear of coated
        plate by ball crater technique
Bibliography

1.1This European Standard describes a method for evaluating the wear of ceramic coatings by use of a reciprocating wear test whereby a flat or spherically ended pin is reciprocated, under load, against a flat plate. Depending on the conditions being simulated, either the pin or plate or both may be coated with the material under test, with the other member of the couple being selected for its relevance to the system under evaluation. The method described is considered to be not suitable for evaluating fretting wear.1.2The method is intended for evaluating coatings with a thickness of more than 1 μm, though might also be used for testing thinner coatings.1.3The test may be carried out under either dry or lubricated conditions. However, the test is not designed for evaluating the properties of lubricants except insofar as they affect the wear behaviour of the materials being tested. Related methods for testing lubricants using reciprocating motion are given in references [4] to [6].1.4Testing a materials couple under a range of loading conditions might provide information about the adhesive and/or cohesive strength of the coating, in addition to its wear behaviour.