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Direct Synthesis of TiCr2 Powder by Calciothermic Co-reduction of their Oxides in Molten CaCl2

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Title: Direct Synthesis of TiCr2 Powder by Calciothermic Co-reduction of their Oxides in Molten CaCl2
Other Titles: カルシウム共還元による酸化物からのTiCr2粉末直接合成(E)
Authors: Suzuki, Ryosuke O.1 Browse this author →KAKEN DB
Kitagawa, Hitoshi2 Browse this author
Authors(alt): 鈴木, 亮輔1
北川, 仁史2
Keywords: co-reduction
molten salt
hydrogen storage alloy
inorganic synthesis
Issue Date: 2005
Publisher: Electrochemical Society of Japan
Journal Title: Electrochemistry
Journal Title(alt): 電気化学および工業物理化学
Volume: 73
Issue: 8
Start Page: 724
End Page: 729
Abstract: A new process is studied to synthesize an intermetallic compound TiCr2 directly from the oxide mixture of Cr2O3 and TiO2. This method combines the calciothermic co-reduction and the in situ dissolution of the by-product CaO into the molten salt. The molten CaCl2 was needed to dissolve CaO for complete reaction, and the reduction and alloying occurred simultaneously and quickly in this media. Because of the narrow compositional range of TiCr2, however, a small amount of Ti and Cr coexisted with α-TiCr2. The high temperature form, β-TiCr2, was not found probably because it decomposed into α-TiCr2 and Cr during cooling. The obtained alloy powder showed capability of hydrogen storage after activation.
Type: article (author version)
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)

Submitter: 鈴木 亮輔

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