INFLUENCES OF KF-AlF3 SOLVENT COMPOSITIONS ON THE INTERFACIAL REACTIONS BETWEEN ALUMINUM AND KBF4

doi:10.3724/SP.J.1037.2012.00071

Acta Metall Sin

2012, Vol. 48

Issue (6): 739-743 DOI: 10.3724/SP.J.1037.2012.00071

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INFLUENCES OF KF-AlF₃ SOLVENT COMPOSITIONS ON THE INTERFACIAL REACTIONS BETWEEN ALUMINUM AND KBF₄

WANG Qingliang¹, ZHAO Hongsheng², SHEN Li²,LI Zhengguang², ZHAO Jiuzhou¹

1. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016
2. Baotou Aluminum Co., Ltd., Baotou 014046

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WANG Qingliang, ZHAO Hongsheng, SHEN Li,LI Zhengguang, ZHAO Jiuzhou. INFLUENCES OF KF-AlF₃ SOLVENT COMPOSITIONS ON THE INTERFACIAL REACTIONS BETWEEN ALUMINUM AND KBF₄. Acta Metall Sin, 2012, 48(6): 739-743.

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Abstract Al-B alloys are widely used in industries. Their manufacturing has attracted great attentions. Generally, the Al-B master alloys are manufactured by reacting KBF₄ with molten aluminum. A lot of work has been done to investigate the effects of reaction technologies on the manufacturing of Al--B alloys. But little attentions were paid to the reaction mechanisms at the interface between the aluminum melt and the fluoride salt. The interfacial reactions between Al and KBF₄ play a critical role in the production of Al--B master alloys. Investigations on the interfacial reactions in four different KF-AlF₃ solvents were carried out. It was demonstrated that a boride layer formed at the interface for all the four solvents. There existed AlF₃ between the boride layer and the aluminum melt when the eutectic KF-AlF₃ solvent or the hypereutectic solvents were used. AlF₃ formed by the reaction between BF₃ and Al.

Key words: Al KBF₄ AlF₃ interfacial reaction solvent composition

Received: 15 February 2012

ZTFLH:

TG113.12

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	YU Jing-Liang
	DIAO Hong-Sheng
	LIE Zheng-Guang
	CHEN Li
	DIAO Jiu-Zhou

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https://www.ams.org.cn/EN/10.3724/SP.J.1037.2012.00071 OR https://www.ams.org.cn/EN/Y2012/V48/I6/739

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