Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Volker Derflinger0
Date of Patent
March 25, 2008
0Patent Application Number
111788180
Date Filed
July 11, 2005
0Patent Primary Examiner
Patent abstract
A multilayer hard coating for tools for machining applications with a multilayer structure for improving the wear resistance of workpieces includes at least one (AlyCr1-y) X layer (0.2≦y≦0.7), wherein X is one of the following elements N, C, B, CN, BN, CBN, NO, CO, BO, CNO, BNO, CBNO, but preferably N or CN, and/or a (TizSi1-z) layer (0.1≦z≦0.3). The hard coating also includes at least one layer stack with one (AlCrTiSi) X mixed layer, followed by another (TizSi1-z) X layer, followed by another (AlCrTiSi) X mixed layer, followed by another (AlyCr1-y) X layer.
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