Research on Distribution and Morphology of Primary Si Under the Effect of Direct Current

• Autorzy: Li Jiayan , Njuguna Benson Kihono , Ni Ping , Wang Liang , Tan Yi

Identyfikatory

DOI

10.24425/amm.2021.135867

• Języki publikacji: EN

Abstrakty

EN

A source of pure silicon was added into an alloy refining system during a refining process with the application of a direct electric current. The effect of the temperature difference between the graphite electrodes and the alloy was decreased. The temperature increase value (ΔT) of the Al-28.51wt.%Si alloy sample caused by Joule heating was calculated by weighing the mass of primary silicon. When the current density was 5.0×10⁵A/m², the overall temperature increase in the alloy was about 90°C regardless of the alloy composition. Adequate silicon atoms recorded the footprint of the electric current in the alloy melt. The flow convection generated by the electric current in the melt during the solidification process resulted in the refinement of primary silicon. The Fe impurity content in alloy refining without the electric current density was 2.16 ppm. However, it decreased to 1.27 ppmw with the application of an electric current density of 5.0×10⁵A/m².

Słowa kluczowe

EN

silicon source; direct current; Joule heating; Si morphology; Fe impurity

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2021
• Tom: Vol. 66, iss. 2
• Strony: 367--372
• Opis fizyczny: Bibliogr. 21 poz., fot., rys., wzory

Twórcy

autor

Li Jiayan

• Dalian University of Technology, School of Materials Science and Engineering, No. 2 Linggong Road, Ganjingzi District, Dalian 116023, China
• Dalian University of Technology, Key Laboratory for Solar Energy Photovoltaic System of Liaoning Province, Dalian 116024, China

autor

Njuguna Benson Kihono

• Dalian University of Technology, School of Materials Science and Engineering, No. 2 Linggong Road, Ganjingzi District, Dalian 116023, China
• Dalian University of Technology, Key Laboratory for Solar Energy Photovoltaic System of Liaoning Province, Dalian 116024, China

autor

Ni Ping

• Dalian University of Technology, School of Materials Science and Engineering, No. 2 Linggong Road, Ganjingzi District, Dalian 116023, China
• Dalian University of Technology, Key Laboratory for Solar Energy Photovoltaic System of Liaoning Province, Dalian 116024, China

autor

Wang Liang

• Dalian University of Technology, School of Materials Science and Engineering, No. 2 Linggong Road, Ganjingzi District, Dalian 116023, China
• Dalian University of Technology, Key Laboratory for Solar Energy Photovoltaic System of Liaoning Province, Dalian 116024, China

autor

Tan Yi

• Dalian University of Technology, School of Materials Science and Engineering, No. 2 Linggong Road, Ganjingzi District, Dalian 116023, China
• Dalian University of Technology, Key Laboratory for Solar Energy Photovoltaic System of Liaoning Province, Dalian 116024, China

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Uwagi

1. This program is financially supported by National Natural Science Foundation of China (grant No. 51574057), and the Fundamental Research Foundation for the Central universities (DuT19JC30).

2. Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).