Back to results
US 7,431,988 B2Granted
Hard coating and machining tool disposed with hard coating
AssigneeOsg Corporation
InventorsHiroyuki Hanyu, Takaomi Toihara, Hiroaki Sugita
Life of this patent
Estimating the term…
Abstract
A hard coating that is to be disposed on a surface of a body includes a diamond layer which includes a plurality of diamond grains and is doped with boron, and an outer layer which includes an intermetallic compound and is disposed on the diamond layer by a physical vapor deposition method.
Claims18
A hard coating that is to be disposed on a surface of a body comprising:
- a diamond layer which includes a plurality of diamond grains and is doped with boron;
- and
- an outer layer which includes an intermetallic compound and is disposed on the diamond layer by a physical vapor deposition method,
- wherein the diamond layer includes a plurality of diamond microcrystals as the diamond grains, a crystal grain diameter of the diamond microcrystal being not larger than 2 μm.
1 more element
Dependencies are inferred from the claim text.