NEW SCOPE OF HIGH-PRESSURE HIGH-TEMPERATURE SYNTHESIS OF CUBIC BORON-NITRIDE

被引：40

作者：

NAKANO, S

FUKUNAGA, O

机构：

[1] Department of Inorganic Materials, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152, Ookayama

来源：

关键词：

D O I：

10.1016/0925-9635(93)90149-V

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The stability region of cubic boron nitride (c-BN) has been determined by high pressure-high temperature experiments. The P-T regions of c-BN formation by catalytic conversion and by direct transformation were reviewed and indicated that a temperature-independent threshold does exist between 4.6 and 5.0 GPa for most catalysts of alkali and alkaline earth boron nitrides. The corresponding solid state transformation from hexagonal BN (h-BN) to wurtzite BN showed a threshold at about 6.5 GPa. The threshold pressure of the formation region of c-BN is discussed based on the simple energy diagram for activation of sp(2) bonding of h-BN.

引用

页码：1409 / 1413

页数：5

共 22 条

[1] SYNTHESIS OF DIAMOND FROM GRAPHITE CARBONATE SYSTEMS UNDER VERY HIGH-TEMPERATURE AND PRESSURE [J].