Preparation of TiB2 coated cathode of Al electrolysis

J Mater Sci Technol ›› 2001, Vol. 17 ›› Issue (S1): 171-173.

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Preparation of TiB2 coated cathode of Al electrolysis

Bing LI, Fei ZHOU, Zhuxian QIU

Northeastern University, Shenyang 110004, China

Received:2000-12-15 Revised:2001-03-30 Online:2001-10-28 Published:2009-10-10
Contact: Bing LI

Abstract

Abstract: TiB2 coating was prepared by electrodeposition from KCl-KF-K2TiF6-KBF4 molten salts on graphite substrate at 810 degreesC. The coating is affected by protective gas, current density, and electrolyte compositions. From a series of tests it can be concluded that when the following conditions are used, TiB2 coating will be compact and homogeneous, and the layer of coating has higher TiB2 content, and also has good coherence to graphite matrix. The electrolysis conditions are as follows: KCl 5%, KF 60 similar to 70%, K2TiF6 10%, KBF4 20 similar to 30%, (mole fraction), current density being 0.4 similar to0.8 A/cm(2) and Ar being used as protective gas.

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Bing LI, Fei ZHOU, Zhuxian QIU. Preparation of TiB2 coated cathode of Al electrolysis[J]. J Mater Sci Technol, 2001, 17(S1): 171-173.

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Preparation of TiB2 coated cathode of Al electrolysis

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