Investigations on elastic properties and electronic structures of alpha-CoSn3 doped with Ni via first-principles calculations and nano-indentation measurements

doi:10.1016/j.rinp.2019.102607

	Investigations on elastic properties and electronic structures of alpha-CoSn3 doped with Ni via first-principles calculations and nano-indentation measurements
	Bi, Xiaoyang 1; Hu, Xiaowu 1; Li, Qinglin 2
刊名	RESULTS IN PHYSICS
	2019-12-01
卷号	15
关键词	Intermetallic compound Nano-indentation First-principles calculations Mechanical properties
ISSN号	2211-3797
DOI	10.1016/j.rinp.2019.102607
英文摘要	The low-temperature alpha-CoSn3 intermetallic compound (IMC) doped with Ni is an important component at the interface between Sn-based solder and printed circuit boards, which largely controls the mechanical properties of solder joints. However, the structure and elastic properties of alpha-CoSn3 doped with Ni are not well understood. In this work, first-principle calculations and nano-indentation have been performed to explore the influences of additional Ni on elastic properties of alpha-CoSn3 IMC. By means of nano-indentation, the Young's modulus and hardness were recorded for alpha-CoSn3 and alpha-(Co,Ni)Sn-3 to be 149.9 +/- 8.6 GPa and 6.14 +/- 0.96 GPa, and 142.5 +/- 7.6 GPa and 5.84 +/- 0.76 GPa, respectively. Systematic works of first-principle calculations indicated that the doped Ni weakened the mechanical properties while strengthened the ductility and elastic anisotropy of alpha-CoSn3. The calculated electronic structures demonstrated that the bonding energies of alpha-CoSn3 were obviously decreased with the doping of Ni, which led to the degeneration of mechanical properties.
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000502391000086
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/155293]
专题	材料科学与工程学院
作者单位	1.Nanchang Univ, Sch Mech & Elect Engn, Key Lab Robot & Welding Automat Jiangxi Prov, Nanchang 330031, Jiangxi, Peoples R China; 2.Lanzhou Univ Technol, State Key Laboratorial Adv Proc & Recycling Nonfe, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Bi, Xiaoyang,Hu, Xiaowu,Li, Qinglin. Investigations on elastic properties and electronic structures of alpha-CoSn3 doped with Ni via first-principles calculations and nano-indentation measurements[J]. RESULTS IN PHYSICS,2019,15.
APA	Bi, Xiaoyang,Hu, Xiaowu,&Li, Qinglin.(2019).Investigations on elastic properties and electronic structures of alpha-CoSn3 doped with Ni via first-principles calculations and nano-indentation measurements.RESULTS IN PHYSICS,15.
MLA	Bi, Xiaoyang,et al."Investigations on elastic properties and electronic structures of alpha-CoSn3 doped with Ni via first-principles calculations and nano-indentation measurements".RESULTS IN PHYSICS 15(2019).