C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 35/58 (2006.01) B01J 3/06 (2006.01) B24D 3/00 (2006.01)
Patent
CA 2049672
60SI00391 UNSUPPORTED SINTERED CBN/DIAMOND CONJOINT COMPACTS AND THEIR FABRICATION ABSTRACT OF THE DISCLOSURE The present invention is directed to sintered polycrystalline CBN/diamond conjoint compacts which are unsupported, fabricated in the substantial absence of catalyst/sintering aid material, and exhibit CBN crystal-to-crystal bonding. The absence of catalyst/sintering aid material should make these conjoint masses fully dense and thermally-stable. The unsupported, sintered CBN/diamond conjoint compacts disclosed herein can be fabricated by subjecting a mixture of CBN or a CBN-forming material, and diamond particles in the substantial absence of catalyst/sintering aid material, and diamond forming an unsupported sintered polycrystalline CBN compact characterized by CBN intercrystal bonding and containing diamond particles throughout the conjoint compact. Feed for forming the novel conjoint compact includes PBN, monocrystallline and polycrystalline CBN, and boron-rich polycrystalline CBN.
Company General Electric
Craig Wilson And Company
Slutz David E.
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