Patent ID: 7767320

Claim:
Hard-material-coated bodies having a single-layer or multi-layer layer system that contains at least one Ti 1-x Al x N hard material layer produced by means of CVD without plasma stimulation, wherein the Ti 1-x Al x N hard material layer is present as a monophase layer in the cubic NaCl structure, with a stoichiometry coefficient x>0.75 up to x=0.93, and a lattice constant afcc between 0.412 nm and 0.405 nm, or wherein the Ti 1-x Al x N hard material layer is a multiphase layer whose main phase consists of Ti 1-x Al x N having a cubic NaCl structure, with a stoichiometry coefficient x>0.75 up to x=0.93, and a lattice constant afcc between 0.412 nm and 0.405 nm, and Ti 1-x Al x N in the wurtzite structure and/or TiNx in the NaCl structure are contained as an additional phase, and wherein the chlorine content of the Ti 1-x Al x N hard material layer lies in the range between 0.05 and 0.9 at.-%.