Strengthening mechanism of Al/Sn interfaces: Study from experiments and first-principles calculation

The joining of aluminum using a metal of pure Sn as an interlayer or solder was investigated by reactive air soldering and vacuum diffusion bonding. The interfacial structure and mechanical property of the joints were examined. A nanometer-scale interlayer of amorphous Al2O3 dotted with nanocrystall...

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Autores principales:	Han Yan, Weibing Guo, Tianmin Luan, Xinran Ma, Guojing Xu, Xuesong Leng, Weiwei Zhao, Jiuchun Yan
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Reactive air soldering Al/Sn interface Oxygen atom dopping First-principles calculations Strengthening Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/250d67aff37d4333a2bba1f5e75eca94
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spelling	oai:doaj.org-article:250d67aff37d4333a2bba1f5e75eca942021-12-02T04:59:01ZStrengthening mechanism of Al/Sn interfaces: Study from experiments and first-principles calculation0264-127510.1016/j.matdes.2021.110292https://doaj.org/article/250d67aff37d4333a2bba1f5e75eca942021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0264127521008479https://doaj.org/toc/0264-1275The joining of aluminum using a metal of pure Sn as an interlayer or solder was investigated by reactive air soldering and vacuum diffusion bonding. The interfacial structure and mechanical property of the joints were examined. A nanometer-scale interlayer of amorphous Al2O3 dotted with nanocrystalline γ-Al2O3 was observed and identified at the Al/Sn interface by reactive air soldering. The shear strength of the joints (∼40 MPa) by reactive air soldering was higher than that (∼20 MPa) by vacuum diffusion bonding. The reaction and diffusion behaviors of oxygen dopants at the Al/Sn interface were studied through geometry optimization and a transition state search, respectively. The work of separation values of these two interfaces between Al/O-terminated or Sn/O-terminated was 6.46 and 2.83 J/m2, respectively, which were both larger than that of a Al/Sn interface (1.06 J/m2). The results indicated that oxygen atoms could strengthen the interfacial adhesion of Al/Sn. In addition, the interfacial reaction of Al and O and the formation process of Al2O3 were discussed. It has the potential to be used to realize a high-strength joint in other weak bonding systems such as solder/ceramics, through O doping in air.Han YanWeibing GuoTianmin LuanXinran MaGuojing XuXuesong LengWeiwei ZhaoJiuchun YanElsevierarticleReactive air solderingAl/Sn interfaceOxygen atom doppingFirst-principles calculationsStrengtheningMaterials of engineering and construction. Mechanics of materialsTA401-492ENMaterials & Design, Vol 212, Iss , Pp 110292- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Reactive air soldering Al/Sn interface Oxygen atom dopping First-principles calculations Strengthening Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Reactive air soldering Al/Sn interface Oxygen atom dopping First-principles calculations Strengthening Materials of engineering and construction. Mechanics of materials TA401-492 Han Yan Weibing Guo Tianmin Luan Xinran Ma Guojing Xu Xuesong Leng Weiwei Zhao Jiuchun Yan Strengthening mechanism of Al/Sn interfaces: Study from experiments and first-principles calculation
description	The joining of aluminum using a metal of pure Sn as an interlayer or solder was investigated by reactive air soldering and vacuum diffusion bonding. The interfacial structure and mechanical property of the joints were examined. A nanometer-scale interlayer of amorphous Al2O3 dotted with nanocrystalline γ-Al2O3 was observed and identified at the Al/Sn interface by reactive air soldering. The shear strength of the joints (∼40 MPa) by reactive air soldering was higher than that (∼20 MPa) by vacuum diffusion bonding. The reaction and diffusion behaviors of oxygen dopants at the Al/Sn interface were studied through geometry optimization and a transition state search, respectively. The work of separation values of these two interfaces between Al/O-terminated or Sn/O-terminated was 6.46 and 2.83 J/m2, respectively, which were both larger than that of a Al/Sn interface (1.06 J/m2). The results indicated that oxygen atoms could strengthen the interfacial adhesion of Al/Sn. In addition, the interfacial reaction of Al and O and the formation process of Al2O3 were discussed. It has the potential to be used to realize a high-strength joint in other weak bonding systems such as solder/ceramics, through O doping in air.
format	article
author	Han Yan Weibing Guo Tianmin Luan Xinran Ma Guojing Xu Xuesong Leng Weiwei Zhao Jiuchun Yan
author_facet	Han Yan Weibing Guo Tianmin Luan Xinran Ma Guojing Xu Xuesong Leng Weiwei Zhao Jiuchun Yan
author_sort	Han Yan
title	Strengthening mechanism of Al/Sn interfaces: Study from experiments and first-principles calculation
title_short	Strengthening mechanism of Al/Sn interfaces: Study from experiments and first-principles calculation
title_full	Strengthening mechanism of Al/Sn interfaces: Study from experiments and first-principles calculation
title_fullStr	Strengthening mechanism of Al/Sn interfaces: Study from experiments and first-principles calculation
title_full_unstemmed	Strengthening mechanism of Al/Sn interfaces: Study from experiments and first-principles calculation
title_sort	strengthening mechanism of al/sn interfaces: study from experiments and first-principles calculation
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/250d67aff37d4333a2bba1f5e75eca94
work_keys_str_mv	AT hanyan strengtheningmechanismofalsninterfacesstudyfromexperimentsandfirstprinciplescalculation AT weibingguo strengtheningmechanismofalsninterfacesstudyfromexperimentsandfirstprinciplescalculation AT tianminluan strengtheningmechanismofalsninterfacesstudyfromexperimentsandfirstprinciplescalculation AT xinranma strengtheningmechanismofalsninterfacesstudyfromexperimentsandfirstprinciplescalculation AT guojingxu strengtheningmechanismofalsninterfacesstudyfromexperimentsandfirstprinciplescalculation AT xuesongleng strengtheningmechanismofalsninterfacesstudyfromexperimentsandfirstprinciplescalculation AT weiweizhao strengtheningmechanismofalsninterfacesstudyfromexperimentsandfirstprinciplescalculation AT jiuchunyan strengtheningmechanismofalsninterfacesstudyfromexperimentsandfirstprinciplescalculation
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Strengthening mechanism of Al/Sn interfaces: Study from experiments and first-principles calculation

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