Abrasive tool making process – material – or composition – With inorganic material
Patent
1985-04-15
1987-05-19
Lieberman, Paul
Abrasive tool making process, material, or composition
With inorganic material
51295, B24D 302
Patent
active
046664661
ABSTRACT:
An abrasive compact is provided comprising a mass of cubic boron nitride particles and a second phase bonded into a hard conglomerate; adjacent cubic boron nitride particles being joined to each other to form an intergrown mass; the cubic boron nitride content of the compact being at least 80 percent by weight; and the second phase consisting essentially of aluminum nitride and/or aluminum diboride. The compacts are made by subjecting a mass of cubic boron nitride particles in contact with aluminum to a pressure of 50 to 65 kilobars and a temperature of 1400.degree. C. to 1600.degree. C. and maintaining these elevated conditions for a time sufficient to produce the compact.
REFERENCES:
patent: 3743489 (1973-07-01), Wentrof, Jr. et al.
patent: 3850590 (1974-11-01), Chalkley
patent: 3944398 (1976-03-01), Bell
patent: 4110084 (1978-08-01), Lee et al.
patent: 4215999 (1980-08-01), Phaal
patent: 4219339 (1980-08-01), Wilson
Chemical Abstracts, vol. 90, No. 20, 14 May 1979, Ref. No. 156011y, p. 233, Columbus, Ohio (US) & JP-A-78 136 015 (Sumitomo Electric Industries, Ltd.) (28.11.1978).
Chemical Abstracts, vol. 84, No. 26, 28 June 1976, Ref. No. 184129n, p. 254-Columbus, Ohio (US) & JP-A-76 04 207 (National Institute For Research in Inorganic Materials) (14.01.1976).
Lieberman Paul
Thompson Willie J.
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