HIGH-PRESSURE SYNTHESIS OF DIAMOND IN THE SYSTEMS OF GRAHPITE-SULFATE AND GRAPHITE-HYDROXIDE

被引：66

作者：

AKAISHI, M

KANDA, H

YAMAOKA, S

机构：

[1] National Institute for Research in Inorganic Materials, Tsukuba-shi, Ibaraki, 305

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1990年 / 29卷 / 07期

关键词：

Diamond; High pressure; Hydroxide; Nonmetallic catalyst; Sulfate;

D O I：

10.1143/JJAP.29.L1172

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Diamonds were reproducively synthesized from graphite in the presence of Na2SO4, MgSO4, CaSO4·1/2H2O, Mg(OH)2 and Ca(OH)2 at high pressure of 7.7 GPa and a temperature of 2150°C. Although starting graphite was completely transformed to diamond in the presence of the sulfates or hydroxides, no transformation to diamond could be detected from graphite only at the same pressure and temperature condition. Therefore, we concluded that sulfates and hydroxides have a strong catalytic effect on the transformation of graphite to diamond. © 1990 The Japan Society of Applied Physics.

引用

页码：L1172 / L1174

页数：3

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