Abstract

A non-destructive method for the determination of the thickness, density, microhardness and optical anisotropy factor and of the components of a pyrocarbon (Py-C) coating is described. The coatings were formed in an inductive r.f. plasma in a mixture of 1%–30% propylene in argon, at pressures of 2–9 Torr. Correlations between the plasma parameters, the mean monticule diameter and some physical and mechanical characteristics of the Py-C coating enable the calculation of other properties. This method provides information which could otherwise only be obtained by destructive tests.

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