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Fabrication of a micro-porous Ti-Zr alloy by electroless reduction with a calcium reductant for electrolytic capacitor applications
| Title: | Fabrication of a micro-porous Ti-Zr alloy by electroless reduction with a calcium reductant for electrolytic capacitor applications |
| Authors: | Kikuchi, Tatsuya Browse this author →KAKEN DB | | Yoshida, Masumi Browse this author | | Taguchi, Yoshiaki Browse this author | | Habazaki, Hiroki Browse this author →KAKEN DB | | Suzuki, Ryosuke O. Browse this author →KAKEN DB |
| Keywords: | Electrode materials | | Chemical synthesis | | Microstructure | | Scanning electron microscopy, SEM |
| Issue Date: | 15-Feb-2014 |
| Publisher: | Elsevier science sa |
| Journal Title: | Journal of alloys and compounds |
| Volume: | 586 |
| Start Page: | 148 |
| End Page: | 154 |
| Publisher DOI: | 10.1016/j.jallcom.2013.10.052 |
| Abstract: | A metallic titanium and zirconium micro-porous alloy for electrolytic capacitor applications was produced by electroless reduction with a calcium reductant in calcium chloride molten salt at 1173 K. Mixed TiO2-70 at%ZrO2 oxides, metallic calcium, and calcium chloride were placed in a titanium crucible and heated under argon atmosphere to reduce the oxides with the calcium reductant. A metallic Ti-Zr alloy was obtained by electroless reduction in the presence of excess calcium reductant and showed a microporous morphology due to the sintering of each of the reduced particles during the reduction. The residual oxygen content and surface area of the reduced Ti-Zr alloy decreased over time during the electroless reduction. The element distributions were slightly different at the positions of the alloy and were in the composition range of Ti-69.3 at% to 74.3 at% Zr. A micro-porous Ti-Zr alloy with low oxygen content (0.20 wt%) and large surface area (0.55 m(2) g (1)) was successfully fabricated by electroless reduction under optimal conditions. The reduction mechanisms of the mixed and pure oxides by the calcium reductant are also discussed. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/56405 |
| 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: 菊地 竜也
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