METHOD FOR PRODUCING A COATED SUBSTRATE BODY, SUBSTRATE BODY COMPRISING A COATING AND USE OF THE COATED SUBSTRATE BODY

摘要

The invention relates to a method for producing a coated substrate body by chemical vapor deposition at least on one layer made of a carbonitride of a metal of IVa-Vla-groups of the periodic table, wherein a monocyclic hydrocarbon is used in the gas atmosphere during the deposition, in addition to a nitrile. According to the invention, the thus produced coated substrate body has a high degree of hardness and is used, preferably, in cutting operations where the cutting speeds are≧250 m/min.