Abstract
The contraction of the expanded crystal lattice, inherent in coatings made by plasma-enhanced vapor deposition, occurs on tempering with an activation energy of about 2.09 eV and is accompanied in the present films by an increase in residual compressive stress and the development of a texture in the plane of the film. The residual compressive stress in the WC phase in the substrate also falls. The scratch test adhesion of the coating increases slightly on tempering.
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