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Branched morphology of Nb powder particles fabricated by calciothermic reduction in CaCl2 melt

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Title: Branched morphology of Nb powder particles fabricated by calciothermic reduction in CaCl2 melt
Authors: Suzuki, Nobuyoshi Browse this author
Suzuki, Ryosuke O. Browse this author →KAKEN DB
Natsui, Shungo Browse this author
Kikuchi, Tatsuya Browse this author
Keywords: Calciothermic reduction
Niobium oxide
Powder morphology
Niobium powder
Molten salt
Issue Date: Nov-2017
Publisher: Elsevier
Journal Title: Journal of physics and chemistry of solids
Volume: 110
Start Page: 58
End Page: 63
Publisher DOI: 10.1016/j.jpcs.2017.05.032
Abstract: A new branched morphology of metallic niobium powder particles was produced by calciothermic reduction of niobium oxides in molten CaCl2. The influence of some reaction parameters on the powder particle morphology was studied, and the formation mechanism was investigated. It was found that the formation of intermediate complex niobium oxides (CaxNb2Oy) was crucial in the formation of niobium powder particles with the branched morphology. Based on this finding, the formation mechanism of the branched morphology in four stages was proposed. These Nb powder particles with microscopic branches can prevent particle sintering during the fabrication process of electric capacitors, allowing the latter to exhibit a higher capacitance.
Rights: © 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
http://creativecommons.org/licenses/by-nc-nd/4.0/
Type: article (author version)
URI: http://hdl.handle.net/2115/75974
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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