Method for bonding a cubic boron nitride sintered compact

Details Method for bonding a cubic boron nitride sintered compact Method for bonding a cubic boron nitride sintered compact

1988-07-27

1989-08-22

Weston, Caleb

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Physical dimension specified

156 89, 228121, 22826312, 22826321, 264332, 428457, 428627, 428698, 428701, B32B 3106

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active

048595314

ABSTRACT:
A method for bonding a cubic boron nitride sintered compact to other cubic boron nitride sintered compact or to a body of shank material is disclosed. The method comprises forming a Ti layer of 0.01-1 .mu.m in thickness over a bonding interface between two cubic boron nitride sintered compacts or between a cubic boron nitride sintered compact and a body of shank material, forming a layer of Ni or Cu over the Ti layer to a thickness of 0.01-5 .mu.n, putting together the two cubic boron nitride sintered compacts or the cubic boron nitride sintered compact and the body of shank material with a 10-1,000 .mu.m foil of Al, Al-Ni alloy or Ag--Cu--In alloy being placed over the boding interface, and heating the cubic boron nitride sintered compact structure to temperatures above the meeting point of the metal foil and not exceeding 750.degree. C. in an inert atmosphere or in a vacuum.

REFERENCES:
patent: 3918219 (1975-11-01), Wentorf et al.
patent: 4729504 (1988-03-01), Edamura
Chemical Abstracts, (vol. 105, 1986, p. 288) 105:17523g Composite brazes. by Kozo Kashiwagi, (Tanaka Noble Metal Industrial Co., Ltd.).

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