Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2008-03-25
2008-03-25
Turner, Archene (Department: 1775)
Stock material or miscellaneous articles
Composite
Of inorganic material
C051S307000, C051S309000, C428S216000, C428S336000, C428S697000, C428S698000, C428S704000
Reexamination Certificate
active
11178818
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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OC Oerlikon Balzers AG
Pearne & Gordon LLP
Turner Archene
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