Title:
TOOL COATED WITH HARD COATING
Document Type and Number:
WIPO Patent Application WO/2011/058637
Kind Code:
A1
Abstract:
A hard coating is composed of Ala Crb (BN)c αd N, wherein an amorphous BN or a predetermined bonded BN incorporating at least either a crystalline c-BN or h-BN has been added in a 0.02-0.20 atom ratio to an aluminum rich AlCrN coating with a Cr/Al ratio in the range of 0.25-0.67, thereby achieving superior heat resistance. The amorphous BN, c-BN, and h-BN are all resistant to oxidation at high temperatures, and the presence of any of an amorphous BN, a cBN, or an h-BN can slow the diffusion of oxygen into the coating. Additionally, the c-BN is hard and thus improves wear-resistance, while the h-BN and the amorphous BN have excellent lubricity and thus improve adhesion-resistance.
Inventors:
SUZUKI TAKAMASA (JP)
SUGITA HIROAKI (JP)
SUGITA HIROAKI (JP)
Application Number:
PCT/JP2009/069297
Publication Date:
May 19, 2011
Filing Date:
November 12, 2009
Export Citation:
Assignee:
OSG CORP (JP)
SUZUKI TAKAMASA (JP)
SUGITA HIROAKI (JP)
SUZUKI TAKAMASA (JP)
SUGITA HIROAKI (JP)
International Classes:
B23C5/16; B23B27/14; B23B51/00; C23C16/06
Foreign References:
| JP2003025113A | 2003-01-29 | |||
| JP2004197225A | 2004-07-15 | |||
| JP2004238736A | 2004-08-26 | |||
| JP2004042192A | 2004-02-12 |
Attorney, Agent or Firm:
IKEDA HARUYUKI (JP)
Haruyuki Ikeda (JP)
Haruyuki Ikeda (JP)
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