Method for synthesis or diamond

Details Method for synthesis or diamond Method for synthesis or diamond

1988-04-21

1991-01-15

Chaudhuri, Olik

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

156DIG68, 204173, 427 39, C01B 3165

Patent

active

049852272

ABSTRACT:
The following are disclosed:
A method for synthesis of diamond which is characterized by contacting a gas obtained by excitation of carbon monoxide and hydrogen in such a ratio as carbon monoxide being at least 1 mol % per total of carbon monoxide and hydrogen with a substrate in the presence of a reducing metal.
A method for synthesis of diamond which is characterized by contacting with a substrate a gas obtained by excitation of carbon dioxide and hydrogen mixed at such a ratio of carbon dioxide being 0.1-20 mol % per hydrogen.
A method for synthesis of diamond by depositiong diamond on the surface of a substrate by introducing onto the surface of the substrate a plasma obtained from hydrogen and carbon source gas by irradiation of microwave in a plasma generator which is characterized in that progress of microwave oscillated from one microwave oscillator is divided and thus divided respective microwaves and led to a plurality of plasma generators.
A diamond synthesis apparatus which is characterized by comprising a microwave oscillator for oscillation of microwave, a branched waveguide for dividing the microwave oscillated from said microwave oscillator and a plurality of plasma generators which are connected with said branched waveguide and have a substrate for deposition of diamond, respectively.

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Japanese Journal of Applied Physics, vol. 26, No. 6, Jun. 1987, pp. L1032-L1034.
Paper "A" Entitled "Vapor Phase Synthesis of Diamond in Inorganic Material Institute" with Partial Translation.
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Thin Solid Film, vol. 117, No. 2, Jul. 1984, pp. 125-130, Elsevier Sequoia, Lausanne, CH; D. Nir et al.: "Diamond Like Carbon Films of Low Hydrogen Contents Made with a Mixture of Hydrocarbon and Reactive Gas", p. 125.

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