Process for preparing polycrystalline CBN ceramic masses

Details Process for preparing polycrystalline CBN ceramic masses Process for preparing polycrystalline CBN ceramic masses

1989-06-16

1991-08-27

Hunt, Brooks H.

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

264 56, 501 96, B28B 1100

Patent

active

050431200

ABSTRACT:
A process for preparing sintered polycrystalline CBN/ceramic conjoint masses comprises forming a mixture of GBN and one or more of a ceramic material or metal which reacts with BN to form a ceramic material, subjecting said mixture to a high pressure and a high temperature conditons for inducing conversion of said GBN to CBN and inducing conversion of any of said metal to its corresponding metal ceramic, and forming said CBN/ceramic conjoint mass. The mixture of GBN and ceramic material or metal can be formed by a process selected from the group consisting of chemical vapor deposition, sol gel techniques, polymer pyrolysis techniques, and combustion synthesis.

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