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Bulk Re2C: Crystal structure and hardness
Zhao Zhisheng #,Li Dongchun *,He Julong
State Key Laboratory of Metastable Materials Science and Technology, Yanshan University
*Correspondence author
#Submitted by
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Funding: 教育部博士点基金（No.20060216002）
Opened online:23 November 2009
Accepted by: none
Citation: Zhao Zhisheng,Li Dongchun,He Julong.Bulk Re2C: Crystal structure and hardness[OL]. [23 November 2009] http://en.paper.edu.cn/en_releasepaper/content/36933
 
 
Metastable bulk rhenium carbide (Re2C) has been synthesized under moderate pressure and high temperature. X-ray diffraction, Raman technology and ab initio calculations were used to determine the structure of rhenium carbide. The results show that the structure of synthesized Re2C should be a ReB2-type structure. The hardness of the bulk Re2C compound is 17.8 GPa in the asymptotic-hardness region, which can be comparable to that of ReB2, indicating that it is a hard material. The P-T phase diagram of the Re-C system has been determined in the region (P=1~6 GPa and T=873~1873 K).
Keywords:metastable;bulk Re2C;structure;hardness
 
 
 

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