发明名称 |
Growing diamonds - while suppressing non-diamond carbon growth by alternating pulses of supersaturation and non-diamond disin |
摘要 |
In growing diamond on a seed-crystal in a carbonaceous-gas medium, periodically-repeated pulses of super-saturation are created in the gaseous med whose duration is less than that required to form non-diamond carbon nuclei of critical dimensions, the interval between pulses being sufficient for the disintegration of these nuclei. The pulse time is pref. between 10-5 and 10 sec. the interval being >=10-5 sec. using periodic temp. pulses. During a pulse, the surface of the seed-crystal is maintained at 800-3500 degrees C. The gas is methane or octane at than 200 mmHg. The object is to form the meta-stable diamond while preventing the formation of non-diamond carbon. |
申请公布号 |
BE779494(A1) |
申请公布日期 |
1972.08.17 |
申请号 |
BE19720779494 |
申请日期 |
1972.02.17 |
申请人 |
ORDENA TRUDOVOGO KRASNOGO ZNAMENI INSTITUT FIZICHESKOI KHIMII AKADEMIL NAUK S.S.S.R., LENINSKY PROSPEKT, 31, MOUSCOU (U.R.S.S.), |
发明人 |
B.V. DERYAGIN;D.V. FEDOSEEV;B.V. SPITSYN;A.V. LAVRENTIEV;V.A. RYABOV;L.L. BUILOV;V.M. ZUBKOV;A.V. BOCHKO |
分类号 |
C30B1/00 |
主分类号 |
C30B1/00 |
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