WC-Co substrate preparation and deposition conditions for high adhesion of CVD diamond coating

Abstract

ABSTRACT

Ex Situ Residual Stress Analysis of Chemical Vapor Deposited Diamond Coated Cutting Tools by Synchrotron X‐Ray Diffraction in Transmission Geometry

“…[23] Because cobalt accelerates graphite formation within the substrate-coating interface, reduces nucleation of diamond on the substrate surface, and influences crystal growth as well as layer adhesion, the chemically invasive measure is mandatory. [24] Nevertheless, the chemical material removal process weakens the surface of the substrate material, which has to be considered during tool manufacturing as well as its later application. [25] Although a pretreatment is also necessary for silicon-nitridebased ceramic substrate materials, the obligation for a penetrating weakening of the subsurface is not given.…”