Title:
【発明の名称】高硬度工具用焼結体
Document Type and Number:
Japanese Patent JP3321824
Kind Code:
B2
Abstract:
PURPOSE:To obtain a sintered compact for a high hardness tool having high toughness and excellent wear resistance by using binder particles having a high N concn. in the surface layers and a high C concn. in the central layers and contg. a specified percentage of Al in a sintered compact for a high hardness tool having a specified compsn. contg. cubic BN. CONSTITUTION:A sintered compact for a high hardness tool is composed of 40-70vol.% cubic BN and a binder for the BN. The binder consists of particles contg. at least Ti, C and N. The surface layers of the particles have a higher N concn. than the central layers, the central layers have a higher C concn. than the surface layers and 10-20vol.% Al and/or Al compd. is incorporated into the binder. The objective sintered compact for a high hardness tool excellent in toughness and wear resistance is produced.
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Inventors:
Mitsuhiro Goto
Tetsuo Nakai
Tetsuo Nakai
Application Number:
JP9631492A
Publication Date:
September 09, 2002
Filing Date:
April 16, 1992
Export Citation:
Assignee:
Sumitomo Electric Industries, Ltd.
International Classes:
C04B35/58; C22C1/05; C22C29/14; C22C29/16; C22C32/00; (IPC1-7): C22C29/14; C22C1/05
Attorney, Agent or Firm:
Fukami Hisaro (3 outside)