C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
23/7
C01B 21/064 (2006.01) C01B 35/14 (2006.01) C04B 35/5831 (2006.01) C09K 3/14 (2006.01)
Patent
CA 1260672
RE-SINTERED BORON-RICH POLYCRYSTALLINE CUBIC BORON NITRIDE AND METHOD FOR MAKING SAME ABSTRACT OF THE DISCLOSURE Disclosed is a method for making re-sintered polycrystalline CBN compact which comprises placing sintered boron-rich polycrystalline CBN particles in a high temperature/high pressure apparatus and subjecting said boron-rich CBN particles to a pressure and a temperature adequate to re-sinter said particles, the temperature being below the reconversion temperature of CBN, for a time sufficient to re-sinter the polycrystalline CBN particles therein. The boron-rich polycrystalline CBN particles in the HP/HT apparatus contain no impurity which would interfere with the sintering process (CBN sintering inhibiting impurities) and no sintering aid material.
528040
Bovenkerk Harold P.
Corrigan Francis R.
Lavens Thomas R.
Shott Richard L.
Diamond Innovations Inc.
Gowling Lafleur Henderson Llp
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