Repetitive nanoindentation tests offer a method to examine the time-dependent degradation mechanisms in coatings. In the case of coated systems for tribological and more specifically for erosion resistant applications, repeated indentation cycles can characterise their durability to repeated erodent impact. This paper reports preliminary observations on the response of 13–18 μm thick CVD boron carbide on tungsten carbide substrates to repetitive indentation cycles, at contact loads similar to those generated in previously reported solid-particle erosion tests on these coatings conducted by this laboratory [1].

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