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Tensile Properties and Corrosion Resistance of Al-xFe-La Alloys for Aluminium Current Collector of Lithium-Ion Batteries

1
Institute of Electronic Materials and Technology, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
2
SJTU-Huafon Joint Lab, Huafon NLM Al Co., Ltd., Shanghai 201506, China
3
Lab of Aluminium Alloys, Shanghai Huafon Materials Technology Institute, Shanghai 201203, China
*
Author to whom correspondence should be addressed.
Metals 2019, 9(6), 706; https://doi.org/10.3390/met9060706
Received: 30 May 2019 / Revised: 13 June 2019 / Accepted: 18 June 2019 / Published: 24 June 2019
(This article belongs to the Special Issue Advances in Characterization of Heterogeneous Metals/Alloys)
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Abstract

Al-xFe-La alloys (x = 0.07, 0.1, 0.2) for aluminum current collectors of lithium-ion batteries were prepared and the microstructure of Al-0.07Fe-0.07La, Al-0.1Fe-0.07La and Al-0.2Fe-0.07La aluminum alloys were observed by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS). The experimental results showed that with the increase of Fe content, the size of the second phases in Al-xFe-0.07La alloys became finer and more dispersed and that the microstructure of the alloy had improved. The strength and corrosion resistance of Al-xFe-La alloys were studied by tensile tests and electrochemical tests and the morphological investigations of samples were also conducted by SEM and EDS. With the increase of Fe content, the strength and corrosion resistance of Al-xFe-La alloys became better. Compared to Al-0.07Fe-0.07La alloy, the yield strength and tensile strength of the Al-0.2Fe-0.07La alloy increased by 51.19% and 58.48% respectively, and the elongation increased by 88.41%. Moreover, Al-0.2Fe-0.07La alloy had much more positive corrosion potential and much smaller corrosion current than those of Al-0.07Fe-0.07La alloy. View Full-Text
Keywords: Al-Fe-La alloys; microstructure; strength; corrosion resistance Al-Fe-La alloys; microstructure; strength; corrosion resistance
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Yang, X.; Ding, D.; Xu, Y.; Zhang, W.; Gao, Y.; Wu, Z.; Chen, G.; Chen, R.; Huang, Y.; Tang, J. Tensile Properties and Corrosion Resistance of Al-xFe-La Alloys for Aluminium Current Collector of Lithium-Ion Batteries. Metals 2019, 9, 706.

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