SUBSTRATE AND BARRIER LAYER CONSIDERATIONS IN THE GROWTH AND PROPERTIES OF DIAMOND AND DIAMOND-LIKE CARBON

Realisation of good quality diamond and diamond-like carbon (DLC) coat ings on different substrates is of considerable importance in the cont ext of their wide variety of applications. The results of our study of the dependence of the film quality on substrate surfaces and barrier layers are reported. The mechanism of CVD diamond deposition on Si(100 ) with barrier layers of epitaxial Y-ZrO2 and C-N films is discussed. The film growth on transition metal surfaces in the context of the sur face chemistry is also reported. Good quality (high wear resistance an d high optical transmittance) DLC coating has been achieved on float g lass. The effect of the initial DLC layer on further film growth is di scussed.