Features of the destruction of silicide coatings under dynamic mechanical stresses

Abstract

In this paper we attempt to apply scratch-method to the study thick-film silicide coatings on molybdenum. The scratch-testing method provides a qualitative assess the relative adhesion of silicide coatings and the level of allowable stresses in coatings. Analysis of acoustic emission signals allows to evaluate the level of degradation of the silicide coatings  and loss of protective functions. It is established that the best mechanical properties has silicide coating obtained through the lower two-stage processing phase.