Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Volker Derflinger0
Date of Patent
June 28, 2011
Patent Application Number
12862953
Date Filed
August 25, 2010
Patent 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 (0.99≧z≧0.7). 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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