Physicochemical Research on Molten Salt Electrolysis of Ti and Ti-Al

Ti及Ti-Al熔盐电解物理化学研究

• 批准号: 06452340
• 负责人: KAWAKAMI Masahiro
• 金额: $ 4.99万
• 依托单位: TOYOHASHI UNIVERSITY OF TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06452340/
• 关键词: Ti; TiB_2; molten chloride; molten fluoroborate; elecctrowinning; electroplating; TiCl_4; H_2; 溶融塩電解; 溶融NaCl-KCl; 電解採取; 電解精製; Ti-Al

The physicochemical research on molten salt electrolysis of Ti and Ti-Al has been carried out. The results is summarized as follows ;1.Electrowinning of Ti in molten chlorideThree electrode reactions have been studied in detail, and the valuable results for the development of more efficient electrowinning process were obtained.(1) Electrodeposition of TiThe dependence of the morphology and purity of Ti deposit and the cathodic current efficiency upon the electrolysis condition was investigated, and the proper condition was specified. Moreover, the effect of fluoride addition in chloride melt on the electrodeposition of Ti was studied.(2) Electro-oxidation of H_2 gasIt was shown that H_2 gas could be oxidized anodically on carbon electrode, and that the electricity of the electrowinning of Ti could be reduced by the use of H_2 oxidation. The dependence of oxidation rate on the electrolysis condition was investigated, and the behavior of reaction product was studied.(3) Partial reduction of TiCl_4The electrochemical partial reduction of TiCl_4 was studied in detail, because it was an effective process for the supply of Ti ion in chloride melt. The effect of the electrolysis condition on reduction rate and reaction product was studied.2.Electroplating of TiB_2The electrode reaction of Ti ion in molten fluoroborate was studied in detail, and it was shown that TiB_2 could be deposited under a suitable condition. The dependence of TiB_2 deposition on electrolysis condition was investigated, and the condition where the good electroplationg layr of TiB_2 was obtained was specified.

对钛和钛铝合金熔盐电解进行了物理化学研究。主要研究结果如下：1.熔融氯化物中钛的电积详细研究了三种电极反应，得到了一些有价值的结果，为开发更高效的电积工艺提供了依据。(1)钛的电沉积研究了钛存款层的形貌、纯度和阴极电流效率与电解条件的关系，确定了适宜的电解条件。研究了在氯化物熔体中加入氟化物对钛电沉积的影响。(2)H_2气体的电氧化研究表明，H_2气体在碳电极上可被阳极氧化，利用H_2氧化可降低钛电积的电流。考察了电解条件对氧化速率的影响，研究了反应产物的行为。(3)TiCl_4的部分还原由于TiCl_4的电化学部分还原是氯化物熔体中Ti离子的有效补充过程，因此对TiCl_4的电化学部分还原进行了详细的研究。2. TiB_2的电镀研究了钛离子在氟硼酸盐熔体中的电极反应，发现在适宜的电解条件下，可以沉积出TiB_2。研究了TiB_2沉积与电解条件的关系，确定了获得良好TiB_2镀层的条件。

项目成果

竹中俊英: "Ti溶融塩電解精製における浴条件の影響" 第26回溶融塩化学討論会講演要旨集. 53-54 (1994)

Toshihide Takenaka：“浴条件对钛熔盐电解精炼的影响”第 26 届熔盐化学研讨会摘要 53-54 (1994)。

Takafumi YAMAMOTO,Toshihide TAKENAKA and Masahiro KAWAKAMI: "Electroplating of TiB_2 in NaF-NaBF_4 Eutectic Melt with Titanium Fluoride" Material Transactions, JIM. vol.37-3. 363-366 (1996)

Takafumi YAMAMOTO、Toshihide TAKENAKA 和 Masahiro KAWAKAMI：“用氟化钛在 NaF-NaBF_4 共晶熔体中电镀 TiB_2”材料交易，JIM。

Takafumi YAMAMOTO,Toshihide TAKENAKA and Masahiro KAWAKAMI: "Electroplating Process of TiB_2 in NaF-NaBF_4 Eutectic Melt with Titanium Fluoride" DENKI KAGAKU. vol.64-2. 132-137 (1996)

Takafumi YAMAMOTO、Toshihide TAKENAKA 和 Masahiro KAWAKAMI：“TiB_2 在 NaF-NaBF_4 氟化钛共晶熔体中的电镀过程”电气化学。

山本貴史,竹中俊英,川上正博: "Tiフッ化物を添加したNaF-NaBF_4共晶溶融塩中でのTiB_2電析反応" 電気化学および工業物理化学. 64(2). 132-137 (1996)

Takashi Yamamoto、Toshihide Takenaka、Masahiro Kawakami：“掺有氟化钛的 NaF-NaBF_4 共晶熔盐中的 TiB_2 电沉积反应”电化学和工业物理化学 64(2)（1996）。

Toshihide TAKENAKA,Akihisa SUGIMOTO,Yukiyoshi MITANI and Masahiro KAWAKAMI: "Effect of Additives on Ti Electrorefining in Molten Chloride" Proceedings of the 10th International Symposiuim on Molten Salts. 171-178 (1997)

Toshihide TAKENAKA、Akihisa SUGIMOTO、Yukiyoshi MITANI 和 Masahiro KAWAKAMI：“添加剂对熔融氯化物中钛电解精炼的影响”第十届国际熔盐研讨会论文集。