Bulk Re2C Crystal Structure, Hardness, and Ultra-incompressibility

被引：48

作者：

Zhao, Zhisheng ^{[1
]}

Cui, Lin ^{[1
]}

Wang, Li-Min ^{[1
]}

Xu, Bo ^{[1
]}

Liu, Zhongyuan ^{[1
]}

Yu, Dongli ^{[1
]}

He, Julong ^{[1
]}

Zhou, Xiang-Feng ^{[2
,3
]}

Wang, Hui-Tian ^{[2
,3
]}

Tian, Yongjun ^{[1
]}

机构：

[1] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Peoples R China

[2] Nankai Univ, Sch Phys, Tianjin 300071, Peoples R China

[3] Nankai Univ, Key Lab Weak Light Nonlinear Photon, Minist Educ, Tianjin 300071, Peoples R China

来源：

CRYSTAL GROWTH & DESIGN | 2010年 / 10卷 / 12期

关键词：

SUPERHARD RHENIUM DIBORIDE; REFINEMENT; PLATINUM;

D O I：

10.1021/cg100659g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A hard ultra-incompressible bulk Re2C material is first synthesized under moderate pressure (2-6 GPa) and high temperature (873 -1873 K) The phase composition of Re2C was determined by a chemical analysis method and its structure is finally determined to be a ReB2 type structure by means of X-ray diffraction, Raman technology, and ab initio calculations The hardness measurements show that it is a hard material which can rival ReB2 More impressively its volume incompressibility is comparable with that of diamond and its c axis incompressibility even exceeds that of diamond In the end the P-T phase diagram of the Re-C system has also been determined in the regions of P = 1-6 GPa and T=873-1873 K The moderate synthesis conditions show that this hard ultra incompressible bulk material will obtain the further applications

引用

页码：5024 / 5026

页数：3

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