Measurement of the adhesion of a brittle film on a ductile substrate by indentation
نویسنده
چکیده
The indentation of a brittle film on a ductile substrate is analysed for obtaining the interface toughness. This measurement method of adhesion provides a simple technique for sampling a small area of the interface on practical geometries with common laboratory equipment. Mechanics solutions are presented to access the interface toughness, Fc, from measurements of the applied load, delamination radius, film thickness and film-substrate material properties. The test is found to be particularly effective for films under large residual compression. Measurements of the interface toughness (Fc 45 J m-2) are made for a diamond-coated titanium alloy.
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