Title:
CERAMIC BASE MATERIAL FOR DIAMOND COATING AND PRODUCTION OF BASE MATERIAL FOR COATING
Document Type and Number:
Japanese Patent JPH0790321
Kind Code:
A
Abstract:
PURPOSE: To produce the ceramic base material which does not cause a film peeling even when a diamond film is applied, is long in time capable of cutting the matter to be machined in good surface accuracy and exhibits excellent characteristic.
CONSTITUTION: The sintered body chip consisting of 3wt.% TiC, 2wt.% TaC, 5wt.% Co and the balance WC with impurities is heat-treated at 1375°C for 3hr in the atmosphere (1amt) of 1vol.% N2 and 99vol.% At to form the rugged surface layer containing N on the surface of the chip.
Inventors:
IIO SATOSHI
USHIDA TAKAHISA
OKAMURA TAKASHI
WATANABE SHOICHI
USHIDA TAKAHISA
OKAMURA TAKASHI
WATANABE SHOICHI
Application Number:
JP7549294A
Publication Date:
April 04, 1995
Filing Date:
March 23, 1994
Export Citation:
Assignee:
NGK SPARK PLUG CO
International Classes:
C22C29/08; B22F3/24; C23C8/24; C23C26/00; (IPC1-7): B22F3/24; C22C29/08; C23C8/24; C23C26/00
Attorney, Agent or Firm:
Asato Kato
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