| 纳米结构金属空位形成能的研究 |
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| 引用本文： | 赵新春,贾冲,张喜燕. 纳米结构金属空位形成能的研究[J]. 南京大学学报(自然科学版), 2009, 45(2) |
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| 作者姓名： | 赵新春 贾冲 张喜燕 |
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| 作者单位： | [1]广西大学物理科学与工程技术学院,南宁 530004 [2]西南交通大学材料科学与工程学院,成都 610031 [3]重庆大学,材料科学与工程学院,重庆 400000 |
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| 基金项目： | 国家自然科学基金(50461001) |
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| 摘 要： | 本文在Tiwari and Patil（Scripta Metallurgica,1975,9：833）计算空位形成能的模型基础上,研究了纳米结构金属的空位形成能计算方法,通过引入形状因子,并考虑晶粒尺寸效应,计算了面心立方（fcc）、体心立方（bcc）和密排六方（hcp）结构纳米金属的空位形成能.结果表明,纳米结构金属的空位形成能随着晶粒尺寸的减小而下降 晶粒尺寸不变时,空位形成能随着晶粒形状因子的增大呈线性下降趋势.
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| 关 键 词： | 空位 纳米结构金属 空位形成能 |
A study of the vacancy formation energy of nanostructure metals |
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| Zhao Xin-Chun,Jia Chong,Zhang Xi-Yan,. A study of the vacancy formation energy of nanostructure metals[J]. Journal of Nanjing University: Nat Sci Ed, 2009, 45(2) |
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| Authors: | Zhao Xin-Chun Jia Chong Zhang Xi-Yan |
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| Affiliation: | 1.Physical Science and Engineering Technology School;Guangxi University;Nanning;530004;China;2.School of Material Science and Engineering;Southwest Jiao tong University;Chengdu;610031;3.School of Material Science and Engineering;Chongqing University;Chongqing;400000;China |
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| Abstract: | Based on the model of calculation vacancy formation energy proposed by Tiwari and Patil(Scripta Metallurgica,1975,9:833),we studied the calculation method of vacancy formation energy for nanostructure metals by introducing figure factor and considering grain size effect,we also calculated the vacancy formation energy of typical nanostructure metals,such as fcc,bcc and hcp metals.The results show that the vacancy formation energy of nanostructure metals decreases with the reducing the grain size and the vaca... |
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| Keywords: | vacancy nanostructure metals vacancy formation energy |
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