Carbonitride alloys based on the transition metals (M, M*, M**) of groups 4 (M), 5 (M*) and 6 (M**) of the periodic table of elements, process for their production and an application for the carbonitride alloys

摘要

The invention relates to tools for shaping with and without cutting. According to the invention, in the hard carbonitride materials of the general formula (MqM*1-q-pM**)(C1-yNy)2 the empirical composition is within the limits 0.5 /= q /= 0.97, 0.03 /= p /= 0.5, 0.80 /= p + q /= 1 and 0.05 /= y /= 0.95 with a total stoichiometry of z /= 0.90. The carbonitrides consist of at least two phases distributed over separate powder particles, and the thermodynamic equilibrium is established with respect to the nonmetals carbon (C) and nitrogen (N) but not for the total system. According to the invention, the hard carbonitride materials are prepared, inter alia, by annealing an appropriate amount of powder under a flowing gas mixture of nitrogen/hydrogen and/or inert gas at partial pressure ratios of nitrogen to hydrogen and/or inert gas of 1 : 0.5 to 1 : 5 at temperatures of 1800 DEG C to 2000 DEG C in a sufficiently short time. The hard carbonitride material according to the invention can be used, inter alia, as a component of a cermet or of a hard-wearing layer.