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Influence of Current Density on the Reduction of TiO2 in Molten Salt (CaCl2 + CaO)
| Title: | Influence of Current Density on the Reduction of TiO2 in Molten Salt (CaCl2 + CaO) |
| Authors: | Kobayashi, Keiichi Browse this author | | Oka, Yuichi Browse this author | | Suzuki, Ryosuke O. Browse this author →KAKEN DB |
| Keywords: | titanium oxide | | reduction | | current density | | molten salt | | calcium chloride |
| Issue Date: | 1-Dec-2009 |
| Publisher: | The Japan Institute of Metals |
| Journal Title: | MATERIALS TRANSACTIONS |
| Volume: | 50 |
| Issue: | 12 |
| Start Page: | 2704 |
| End Page: | 2708 |
| Publisher DOI: | 10.2320/matertrans.MA200910 |
| Abstract: | 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. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/74875 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 鈴木 亮輔
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