Title:
SURFACE COATED CEMETED CARBIDE AND ITS PRODUCING METHOD
Document Type and Number:
Japanese Patent JP3830123
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To produce surface coated cemented carbide in which peeling resistance between a superhard substrate and an artificial diamond coating layer is improved and to provide a method for producing the same.
SOLUTION: As for a modified layer for maintaining the adhesive strength of a diamond coating layer, not the conventional cobalt removal treating method but radical nitriding treatment in which, as to a superhard substrate composed of tungsten carbide base cemented carbide, plasma used for nitriding treatment is controlled to reduce damage to the treating member is executed, by which a modified layer is formed on the surface of the substrate, and moreover, the surface is coated with an artificial diamond coating layer formed by a vapor phase synthesis method at a layer thickness of 0.2 to 3 μm to improve the peeling resistance.
Inventors:
Takafumi Matsubun
Sakamoto Yukihiro
Atsushi Kawana
Yoshio Ishii
Sakamoto Yukihiro
Atsushi Kawana
Yoshio Ishii
Application Number:
JP26391299A
Publication Date:
October 04, 2006
Filing Date:
September 17, 1999
Export Citation:
Assignee:
Nippon Coating Center Co., Ltd.
International Classes:
B23B27/14; C23C16/27; B23P15/28; (IPC1-7): C23C16/27; B23B27/14; B23P15/28
Domestic Patent References:
| JP5320910A | ||||
| JP6220606A | ||||
| JP4221074A | ||||
| JP7070735A | ||||
| JP6248422A |
Attorney, Agent or Firm:
Masuaki Tanaka
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