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US 2003/0148144 A1Published application
Coated tool having a lubricous coating and method of making the same
OwnerAlfred S. Gates JR., Aharon Inspektorinventors
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Abstract
A coated tool, and a method of making the same, wherein the tool has a substrate with a cutting edge. The tool has a lubricous coating which comprises hexagonal boron nitride in a state of residual compressive stress.
Claims41
A coated tool comprising:
- a substrate having a cutting edge;
- and
- a lubricous coating of hexagonal boron nitride on the substrate, and the coating being in a state of residual compressive stress.
A process for the production of a coated tool comprising the steps of:
- forming a sintered substrate from a powder mixture;
- and
- applying a lubricous coating of hexagonal boron nitride wherein the coating of hexagonal boron nitride is in a state of residual compressive stress.
Dependencies are inferred from the claim text.