Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Patent
1982-10-25
1984-08-21
Czaja, Donald E.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Shaping against forming surface
51307, 51309, C04B 3560
Patent
active
044669380
ABSTRACT:
A process improvement is disclosed for making compacts containing diamond which reduces crystal flaws within the diamond. This is accomplished by isolating the single diamond crystals in an compressible matrix before exposing the sample to sintering conditions. One method for doing this (described with reference to FIG. 1) is embedding the diamond 14 in a mixture 16 of graphite and diamond fines. This mixture is disposed between two graphite discs 18 and 19 and two cobalt discs 22 and 23. This sub-assembly is contained within zirconium cup 10 on top of which is placed zirconium disc 12 and exposed to high pressure-high temperature sintering conditions.
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Gigl Paul D.
Winegardner Robert L.
Czaja Donald E.
General Electric Company
Little Douglas B.
Schroeder Robert R.
Thompson W.
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