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| EFFECTS OF CONCENTRATION AND AVERAGE VALENCE OF TITANIUM SUBCHLORIDES ON THE ELECTRO-CRYSTALLIZATION OF TITANIUM |
| Yang Qiqin;Liu Guankun;Fang Beilong Zhongshan University |
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Cite this article:
Yang Qiqin;Liu Guankun;Fang Beilong Zhongshan University. EFFECTS OF CONCENTRATION AND AVERAGE VALENCE OF TITANIUM SUBCHLORIDES ON THE ELECTRO-CRYSTALLIZATION OF TITANIUM. Acta Metall Sin, 1980, 16(3): 365-384.
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Abstract The effects of concentration and average valence of titanium subchlorides onthe electrocrystallization of titanium in a NaCl-KCl melt have been investigated.When the Ti ion concentration was about 2% and the average valence was nothigher than 2.4, the crystals obtained were coarse. A possible explanation of thisphenomenon is as follows: In NaCl-KCl melts, complex ions of Ti will form, andchemically, the Ti~(2+) complex ions are less stable as compared to the Ti~(3+) complexions. This will lead to comparatively small overpotential in electrodeposition. There-fore, lower average valence is conductive to the formation of rather coarsercrystals. With a view to improving the current efficiency and the quality of Tiin the electrolysis of TiCl_4 by basket cathode, measures which can raise theconcentration of titanium subchlorides as well as lower the average valence, suchas adding Ti to the gas-melt interface in the basket should be adopted.
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Received: 18 March 1980
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[1] #12
[2] Alpert, M. B., Schultz, F. J. and Sullivan, W. F., J. Electrochem. Sco., 104 (1957) , 155．
[3] Tadao Tomonari,电气化学,33(1970) ,382．
[4] 中山大学稀有金属化学教研室,中山大学学报(自然科学版),1974,№ 4,82．Z |
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