COLOURLESS MONOCRYSTALLINE DIAMOND OBTAINED VIA HIGH-GROWTH RATE CHEMICAL GAS-PHASE DEPOSITION Russian patent published in 2010 - IPC C30B25/10 C30B29/04 C23C16/27 

Abstract RU 2398922 C2

FIELD: chemistry.

SUBSTANCE: method involves controlling temperature of a diamond growth surface so that all temperature gradients on the said surface do not exceed 20 єC, and growth of a monocrystalline diamond on the said surface through chemical gas-phase deposition in a microwave plasma at growth temperature in a deposition chamber, the atmosphere of which contains approximately 8-20% CH4 per unit H2 and approximately 5-25% O2 per unit CH4. Diamonds larger than 10 carat may be obtained using the method, which is the subject of the present invention.

EFFECT: faster diamond growth.

29 cl, 1 ex, 11 dwg

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RU 2 398 922 C2

Authors

Khemli Rassell Dzh.

Mao Kho-Kvang

Jan Chikh-Shiju

Dates

2010-09-10Published

2006-05-23Filed