Non-metallic catalysts for diamond synthesis under high pressure and high temperature

被引：0
|
作者：
Sun, LL [1 ]
Wu, Q [1 ]
Dai, DY [1 ]
Zhang, J [1 ]
Qin, ZC [1 ]
Wang, WK [1 ]
机构：
[1] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China
来源：
SCIENCE IN CHINA SERIES A-MATHEMATICS PHYSICS ASTRONOMY | 1999年 / 42卷 / 08期
基金：
中国国家自然科学基金;
关键词：
non-metallic catalyst; diamond synthesis; transformation probability; high pressure and high temperature;
D O I：
10.1007/BF02884270
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
Recent results on conversion from graphite to diamond by aid of non-metallic catalysts are reviewed. The current status of experimental advances is presented and typical examples from relevant literature ore provided for understanding the mechanism of the graphite-diamond conversion by aid of these non-metallic catalysts. Furthermore, a tendency of graphite-diamond transformation assisted by carbonates, sulfates or phosphorus under high pressure and high temperature has been investigated by calculating the activation energy and transformation probability of the carbon atoms over a potential barrier. It was found that the activation energy is highly sensitive to the catalyst chosen. The probability sequence of graphite-diamond transformation with these catalysts was put forward.
引用
收藏
页码：834 / 841
页数：8
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