Compressibility and hardness of Co-based bulk metallic glass: A combined experimental and density functional theory study

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	Compressibility and hardness of Co-based bulk metallic glass: A combined experimental and density functional theory study
	Wang, JF ; Li, R ; Xiao, RJ ; Xu, T ; Li, Y ; Liu, ZQ ; Huang, L ; Hua, NB ; Li, G ; Li, YC ; Zhang, T
刊名	APPLIED PHYSICS LETTERS
	2011
卷号	99 期号:15
关键词	SUPERHARD MATERIALS
ISSN号	0003-6951
通讯作者	Li, R: Beihang Univ, Key Lab Aerosp Mat & Performance, Minist Educ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China.
中文摘要	An incompressible Co(54)Ta(11)B(35) bulk metallic glass (BMG) was investigated using in situ high-pressure synchrotron diffraction and nanoindendation. The elastic constants were deduced from the experiments based on the isotropic model. The Vickers hardness was measured to be 17.1 GPa. The elastic moduli and hardness are the highest values known in BMGs. The theoretically calculated elastic properties by density-functional study were well consistent with experimental measurements. The analysis of charge density and bonding character indicates the covalent character of Co-B and B-B bonds, underlying the unusually high elastic modulus and hardness in this material. (C) 2011 American Institute of Physics. [doi:10.1063/1.3647775]
收录类别	SCI
资助信息	Chinese Academy of Sciences [KJCX2-SW-N20, KJCX2-SWN03]; National Basic Research Program (973 Program) [2007CB613900/2010CB731604]; Natural Science Foundation of China [51071008]
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/35009]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Wang, JF,Li, R,Xiao, RJ,et al. Compressibility and hardness of Co-based bulk metallic glass: A combined experimental and density functional theory study[J]. APPLIED PHYSICS LETTERS,2011,99(15).
APA	Wang, JF.,Li, R.,Xiao, RJ.,Xu, T.,Li, Y.,...&Zhang, T.(2011).Compressibility and hardness of Co-based bulk metallic glass: A combined experimental and density functional theory study.APPLIED PHYSICS LETTERS,99(15).
MLA	Wang, JF,et al."Compressibility and hardness of Co-based bulk metallic glass: A combined experimental and density functional theory study".APPLIED PHYSICS LETTERS 99.15(2011).