Lanzhou University of Technology Institutional Repository (LUT_IR)
Effect of Cu additions on mechanical properties of Ni3Sn4-based intermetallic compounds: First-principles calculations and nano-indentation measurements | |
Bi, Xiaoyang1; Hu, Xiaowu1; Jiang, Xiongxin1; Li, Qinglin2 | |
2019-06 | |
发表期刊 | VACUUM |
ISSN | 0042-207X |
卷号 | 164页码:7-14 |
摘要 | The (Ni,Cu)(3)Sn-4 phase as intermetallic compounds (IMCs) plays an important role in evaluating reliability of solder joints. The first-principles calculations were performed to investigate the phase stability, mechanical properties and electronic structures of Ni3Sn4 and Ni2.5Cu0.5Sn4 IMCs. The results shows that the doping of Cu atom not only reduced the phase stability but also weakened the mechanical properties of Ni3Sn4 crystal structure. Meanwhile, all studied Ni3Sn4-based structures were structural stability. Moreover, the anisotropy of Ni2.5Cu0.5Sn4 (2a site) was strongest while that of Ni2.5Cu0.5Sn4 (4i site) was the weakest. Based on analysis of electronic structures, it indicated that the ionic bonding of Ni-Cu in Ni2.5Cu0.5Sn4 structure was weaker than covalent bonding of nearest-neighbor Ni in Ni3Sn4, which led to an energy reduction with the formation of banding states. By means of nano-indentation measurements, the young's modulus and hardness were measured to be 135.3 +/- 8.4 GPa and 5.0 +/- 0.63 GPa for Ni3Sn4 while 126.3 +/- 7.6 GPa and 4.7 +/- 0.72 GPa for (Ni,Cu)(3)Sn-4, respectively, which were close to the value of calculated results. |
关键词 | Intermetallic compounds Nano-indentation First-principles calculations Mechanical properties |
DOI | 10.1016/j.vacuum.2019.02.049 |
收录类别 | SCI ; SCIE |
语种 | 英语 |
资助项目 | Natural Science Foundation of Jiangxi Province[20161BAB206122] |
WOS研究方向 | Materials Science ; Physics |
WOS类目 | Materials Science, Multidisciplinary ; Physics, Applied |
WOS记录号 | WOS:000467510900002 |
出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
EI入藏号 | 20191006593024 |
EI主题词 | Tin alloys |
EI分类号 | 531.1 Metallurgy - 544.1 Copper - 544.2 Copper Alloys - 546.2 Tin and Alloys - 547 Minor, Precious and Rare Earth Metals and Alloys - 761 Nanotechnology - 801.4 Physical Chemistry - 921 Mathematics - 931.3 Atomic and Molecular Physics - 951 Materials Science |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/31830 |
专题 | 省部共建有色金属先进加工与再利用国家重点实验室 材料科学与工程学院 |
通讯作者 | Hu, Xiaowu |
作者单位 | 1.Nanchang Univ, Mech & Elect Engn Sch, Key Lab Robot & Welding Automat Jiangxi Prov, Nanchang 330031, Jiangxi, Peoples R China; 2.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China |
推荐引用方式 GB/T 7714 | Bi, Xiaoyang,Hu, Xiaowu,Jiang, Xiongxin,et al. Effect of Cu additions on mechanical properties of Ni3Sn4-based intermetallic compounds: First-principles calculations and nano-indentation measurements[J]. VACUUM,2019,164:7-14. |
APA | Bi, Xiaoyang,Hu, Xiaowu,Jiang, Xiongxin,&Li, Qinglin.(2019).Effect of Cu additions on mechanical properties of Ni3Sn4-based intermetallic compounds: First-principles calculations and nano-indentation measurements.VACUUM,164,7-14. |
MLA | Bi, Xiaoyang,et al."Effect of Cu additions on mechanical properties of Ni3Sn4-based intermetallic compounds: First-principles calculations and nano-indentation measurements".VACUUM 164(2019):7-14. |
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