Cutting tool with a carbonitride coating
AssigneeWalter AG
InventorVeit Schier
Life of this patent
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Abstract
A cutting tool is provided, at least in certain areas, with a carbonitride coating, which acts to reduce friction and as a wear-protective layer. The coating is applied by means of a modified PVD process in that, for creating the carbonitride layer, carbon and nitrogen in the form of gas are introduced into the reaction chamber, and one or several ion sources are continued to be operated to form plasma.
Claims17
A cutting tool (1) or cutter plate (3, 4) with a wear-reducing coating, said coating including a layer which contains carbonitride wherein the carbon to nitrogen ratio is defined by the following (CyN2) where y/z≧2, and wherein covalent bonds are formed;
- and said carbonitride containing layer comprising at least 5 at % N;
- said layer optionally containing metal Me wherein the metal Me is one or several metals from group IV of the periodic system of chemical elements or aluminum and the Me content does not exceed 10 at %.
Dependencies are inferred from the claim text.