Influence of Current Density on the Reduction of TiO2 in Molten Salt (CaCl2 + CaO)

Kobayashi, Keiichi; Oka, Yuichi; Suzuki, Ryosuke O.

Influence of Current Density on the Reduction of TiO2 in Molten Salt (CaCl2 + CaO)

Kobayashi, Keiichi; Oka, Yuichi; Suzuki, Ryosuke O.

MATERIALS TRANSACTIONS, 2009, 50(12), 2704-2708

Permalink : https://hdl.handle.net/2115/74875

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アクセス権	open access
URI	https://hdl.handle.net/2115/74875
タイトル	Influence of Current Density on the Reduction of TiO2 in Molten Salt (CaCl2 + CaO)
著者	Kobayashi, Keiichi ; Oka, Yuichi ; Suzuki, Ryosuke O.
著者名 Kobayashi, Keiichi
著者名 Oka, Yuichi
e-Rad_Researcher 80179275 著者名 Suzuki, Ryosuke O.
言語	英語
キーワード	titanium oxide
	reduction
	current density
	molten salt
	calcium chloride
発行日	2009-12-01
出版者	The Japan Institute of Metals
出版者	日本金属学会
収録物名	MATERIALS TRANSACTIONS
巻(号)	50(12)
ページ	2704-2708
抄録	Titanium dioxide (TiO2) was successfully reduced at 1223 K by calcium, which was deposited due to the molten salt electrolysis of CaO dissolved in CaCl2. The current density and the Ca concentration near the cathode were changed by varying the electrodes’ surface areas and the distances between an anode and cathode, respectively. At the initial stage of reduction, metallic Ti powder with a lower oxygen concentration was obtained at a lower current density; in this case, most of the electrochemically deposited Ca was efficiently used for reduction. Meanwhile, at the final stage of deoxidation, Ti powder with a much lower oxygen concentration was obtained at a higher current density. In order to obtain metallic powder with a low oxygen concentration, the formed Ca should penetrate the inner part of the sintered sample.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
PISSN	1345-9678
EISSN	1347-5320
NCID	AA1151294X
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.2320/matertrans.MA200910