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タイトル: Electrodeposition of Titanium in Water-soluble KF–KCl Molten Salt
著者: Norikawa, Yutaro
Nohira, Toshiyuki  kyouindb  KAKEN_id
Yasuda, Kouji
著者名の別形: 安田, 幸司
キーワード: titanium
molten salt
electrodeposition
fluoride–chloride
発行日: 1-Mar-2017
出版者: Japan Institute of Metals
誌名: Materials Transactions
巻: 58
号: 3
開始ページ: 390
終了ページ: 394
抄録: A new method of electrodeposition of Ti using a water-soluble KF–KCl molten salt electrolyte has been proposed. The electrochemical behaviors of Ti(III) ions in a KF–KCl molten salt to which 0.1 mol% K₂TiF₆ and an excess amount of sponge Ti were added have been investigated by cyclic voltammetry at 923 K. Anodic currents corresponding to the oxidation of Ti(III) ions were observed from 1.5 V (vs. K⁺/K) at a glass-like carbon rod electrode. In the negative potential region, cathodic currents were seen from 0.3 V, indicating the deposition of Ti metal from Ti(III) ions. When a nickel flag electrode was used, cathodic currents due to the formation of Ti–Ni alloys were observed, in addition to the current of deposition of Ti metal. The analyses of the electrodeposits by scanning electron microscopy, energy dispersive X-ray spectroscopy, and X-ray diffractometry confirmed that dense and smooth films of Ti metal with 20 μm thickness were obtained at current densities of 2.5 × 10⁻²–1.0 × 10⁻¹ Acm⁻².
著作権等: 発行元の許可を得て掲載しています。
URI: http://hdl.handle.net/2433/236053
DOI(出版社版): 10.2320/matertrans.MK201605
出現コレクション:学術雑誌掲載論文等

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