Refractory coatings for cutting tools
AssigneeKennametal Inc.
InventorsVolkmar Sottke, Karl Heinz Wendt, Hartmut Westphal, Peter Leicht, Yixiong Liu
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Abstract
In one aspect, cutting tools are described having coatings adhered thereto which, in some embodiments, demonstrate desirable wear resistance and increased cutting lifetimes. A coated cutting tool described herein comprises a substrate and a coating adhered to the substrate, the coating including a refractory layer comprising plurality of sublayer groups, a sublayer group comprising an aluminum oxynitride (AlON) sublayer or a composite AlON sublayer and an alumina (Al2O3) sublayer or composite alumina sublayer.
Claims41
A coated cutting tool comprising:
- a substrate;
- and
- a coating adhered to the substrate, the coating including a refractory layer comprising a plurality of sublayer groups, a sublayer group comprising an aluminum oxynitride sublayer or a composite aluminum oxynitride sublayer and an alumina sublayer or composite alumina sublayer.
A coated cutting tool comprising:
- a substrate;
- and
- a coating adhered to the substrate, the coating including a refractory layer comprising a plurality of sublayer groups, a sublayer group comprising a composite aluminum oxynitride sublayer and an alumina sublayer or composite alumina sublayer.
A coated cutting tool comprising:
- a substrate;
- and
- a coating adhered to the substrate, the coating including a refractory layer comprising a plurality of sublayer groups, a sublayer group comprising an aluminum oxynitride sublayer or a composite aluminum oxynitride sublayer and a composite alumina sublayer.
Dependencies are inferred from the claim text.