Cubic boron nitride sintered compact and method of preparing the

Details Cubic boron nitride sintered compact and method of preparing the Cubic boron nitride sintered compact and method of preparing the

1992-01-28

1994-08-23

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Refractory

C04B 3558

Patent

active

053407806

ABSTRACT:
A cubic boron nitride sintered compact is produced by adding to atmospheric pressure type boron nitride, a cubic boron nitride synthetic catalyst and 0.01 to 5.0 percent by weight of a hydroxide of an alkaline earth metal to form a mixture. Then, the mixture is subjected to a high temperature/high pressure treatment under a thermodynamically stable pressure condition for cubic boron nitride, whereby the atmospheric pressure type boron nitride is converted to cubic boron nitride under the action of the cubic boron nitride synthetic catalyst. The cubic boron nitride sintered compact thus obtained contains 0.01 to 5.0 percent by weight of an oxide of the alkaline earth metal only in triple points between the cubic boron nitride grains. The cubic boron nitride grains are densely bonded with each other.

REFERENCES:
patent: 4016244 (1977-04-01), Susa et al.
patent: 4188194 (1980-02-01), Corrigan
patent: 4334928 (1982-06-01), Hara et al.
patent: 4469802 (1984-09-01), Endo et al.
patent: 4562163 (1985-12-01), Endo et al.
patent: 4772575 (1988-09-01), Ota et al.
Material Research Bulletin, vol. 7, (1972), pp. 999 to 1004, article entitled: "Synthesis of Polycrystalline Cubic BN", by Wakatsuki et al.

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