Zone melting under vacuum purification method for high-purity aluminum

Heli Wan; Lingxin Kong; Bin Yang; Baoqiang Xu; Mengping Duan; Yongnian Dai

Journal of Materials Research and Technology (Mar 2022)

Zone melting under vacuum purification method for high-purity aluminum

Heli Wan,
Lingxin Kong,
Bin Yang,
Baoqiang Xu,
Mengping Duan,
Yongnian Dai

Affiliations

Heli Wan: National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, 650093, PR China; Research Center of Engineering on Aluminum Industry of Yunnan Province, Kunming, 650093, PR China; Yunnan Provincial Key Laboratory for Nonferrous Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, 650093, PR China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, PR China
Lingxin Kong: National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, 650093, PR China; Research Center of Engineering on Aluminum Industry of Yunnan Province, Kunming, 650093, PR China; Yunnan Provincial Key Laboratory for Nonferrous Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, 650093, PR China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, PR China
Bin Yang: National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, 650093, PR China; Research Center of Engineering on Aluminum Industry of Yunnan Province, Kunming, 650093, PR China; Yunnan Provincial Key Laboratory for Nonferrous Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, 650093, PR China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, PR China; Corresponding author.
Baoqiang Xu: National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, 650093, PR China; Research Center of Engineering on Aluminum Industry of Yunnan Province, Kunming, 650093, PR China; Yunnan Provincial Key Laboratory for Nonferrous Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, 650093, PR China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, PR China; Corresponding author.
Mengping Duan: National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, 650093, PR China; Yunnan Provincial Key Laboratory for Nonferrous Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, 650093, PR China
Yongnian Dai: National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming, 650093, PR China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, PR China

Journal volume & issue: Vol. 17
pp. 802 – 808

Abstract

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In this study, the authors discover the phenomenon of folding during the process of zone melting and purification of aluminum in a protective atmosphere, for the first time, and these surface folds tend to affect the purity and crystal growth of aluminum. Compared with zone melting purification under a protective atmosphere, when zone melting under vacuum is used, interfacial folding is reduced, and accordingly, the aluminum purity is improved and grain size is increased. Results show that when the vacuum is controlled at 0.1Pa, the aluminum samples show perfect purity and large crystal particles.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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