High pressure reaction vessel for quality control of diamond gro

Details High pressure reaction vessel for quality control of diamond gro High pressure reaction vessel for quality control of diamond gro

1976-07-15

1978-02-14

Meros, Edward J.

Special receptacle or package

For mixing

2065241, 206525, 423446, 63 32, 106 42, C01B 3106, B65D 2508, B65D 8570

Patent

active

040733807

ABSTRACT:
Improvements are provided in reaction vessel construction used in the growth of diamond by the process disclosed in U.S. Pat. No. 3,297,407 -- Wentorf, Jr. In assembly of the reaction vessel of this invention, the plug of catalyst-solvent material is disposed between the source of carbon and the diamond seed material as in the Wentorf, Jr. patent and, in addition, the diamond seed material is separated from the catalyst-solvent plug by means for isolating the diamond seed material from the catalyst-solvent material until after the latter has become saturated with carbon from the source of carbon. In addition, preferably the under surface of the plug of catalyst-solvent metal is covered with means for suppressing diamond nucleation. The nucleation suppressing means is usually in the form of a disc and may completely cover the underside of the catalyst-solvent plug or may have a hole therethrough in juxtaposition to the diamond seed/isolating means combination(s). When both the isolating means and the nucleation suppressing means are employed, capability is provided for simultaneously preventing dissolution of the diamond seed and suppressing spurious diamond nucleation.

REFERENCES:
patent: 3297407 (1967-01-01), Wentorf
patent: 3303053 (1967-02-01), Strong et al.
patent: 3317035 (1967-05-01), Cannon
patent: 3346102 (1967-10-01), Strong
patent: 3423177 (1969-01-01), Bovenkerk
Aramagnag, "Popular Science," vol. 197, No. 3, 1970, pp. 82, 83, 134 & 137.

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