Is Rhenium Diboride a Superhard Material?

  title={Is Rhenium Diboride a Superhard Material?},
  author={Jiaqian Qin and Duanwei He and Jianghua Wang and Leiming Fang and Li Lei and Yongjun Li and Juan Hu and Zili Kou and Yan Bi},
  journal={Advanced Materials},
  • J. QinD. He Yan Bi
  • Published 17 December 2008
  • Materials Science
  • Advanced Materials
Superhard materials are usually composed of light elementssuch as boron, carbon, nitrogen, and oxygen. These lightelemental atoms have the ability to form covalently bonded,three-dimensional networks of high atomic density withextreme resistance to external shear. Most researchers agreeonthedefinitionaccordingtowhich‘‘superhard’’materialsarethosewithVickershardness(Hv)higherthan40GPa 

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