A Study on the Diamond Synthesis by B4C under High Temperature and High Pressure

LUO Xiang-Jie; DING Li-Ye; LIU Qiang; YE Li; LUO Bo-Cheng

doi:10.11858/gywlxb.1997.04.006

Volume 11 Issue 4

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Chinese Journal of High Pressure Physics > 1997 > 11(4): 266-269 .

LUO Xiang-Jie, DING Li-Ye, LIU Qiang, YE Li, LUO Bo-Cheng. A Study on the Diamond Synthesis by B4C under High Temperature and High Pressure[J]. Chinese Journal of High Pressure Physics, 1997, 11(4): 266-269 . doi: 10.11858/gywlxb.1997.04.006

Citation:

LUO Xiang-Jie, DING Li-Ye, LIU Qiang, YE Li, LUO Bo-Cheng. A Study on the Diamond Synthesis by B4C under High Temperature and High Pressure[J]. Chinese Journal of High Pressure Physics, 1997, 11(4): 266-269 . doi: 10.11858/gywlxb.1997.04.006

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A Study on the Diamond Synthesis by B4C under High Temperature and High Pressure

doi: 10.11858/gywlxb.1997.04.006

1.
Institute of High Temperature and High Pressure Physics, Sichuan Union University, Chengdu 610065, China;
2.
Institute of Nuclear Science and Technology, Sichuan Union University, Chengdu 610064, China

More Information

Corresponding author: LUO Xiang-Jie
Received Date: 31 Mar 1997
Rev Recd Date: 10 Jun 1997
Publish Date: 05 Dec 1997

Abstract

Abstract

Diamond was synthesized by using B4C as the carbon source in the Ni70Mn25Co5-B4C system under 5.7～6.0 GPa and 1 370～1 500 ℃.This is the first example using pure B4C as the carbon source to synthesize diamonds, which is dark and contains more than 1wt% of boron. The synthesized diamond has a grain-size of about 20 m, is mainly a combination of cubic and octahedral bodies. After reaction, Ni2B compounds are found to exist in the metallic catalyst left, and B13C2 compounds with rich boron in the non-metallic remainders.
- high temperature and high pressure,
- boron carbide,
- i70Mn25Co5 alloy,
- phase transition,
- diamond