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Combustion synthesis of doped LaGaO3 perovskite oxide with Fe
| Title: | Combustion synthesis of doped LaGaO3 perovskite oxide with Fe |
| Authors: | Hsieh, Feng-Fan Browse this author | | Okinaka, Noriyuki Browse this author | | Akiyama, Tomohiro Browse this author →KAKEN DB |
| Keywords: | combustion synthesis | | perovskite type oxide | | Solid oxide fuel cell (SOFC) | | LaGaO3 | | Fe dope | | spark plasma sintering (SPS) |
| Issue Date: | 18-Sep-2009 |
| Publisher: | Elsevier |
| Journal Title: | Journal of Alloys and Compounds |
| Volume: | 484 |
| Issue: | 1-2 |
| Start Page: | 747 |
| End Page: | 752 |
| Publisher DOI: | 10.1016/j.jallcom.2009.05.030 |
| Abstract: | La0.7Sr0.3Ga0.7Mg0.1Fe0.2O3-δ (LSGMF73712) has been proposed as a new substitute for solid electrolyte in SOFC (solid oxide fuel cells). It has several merits, such as lower operating temperature of SOFC, high transport number of oxide ion and higher electronic conductivity. In this study, the doped-lanthanum gallium with Fe was produced by combustion synthesis, and the effect of particle sizes on sintering behaviors of La(Sr)Ga(Mg)FeO3-δ samples by spark plasma sintering (SPS) was analyzed by comparing with the traditional solid-state reaction method.
In the experiments of the combustion synthesis, lanthanum oxide, strontium carbonate, metallic gallium, pure iron, metallic magnesium and sodium perchlorate were mixed uniformly and were ignited at one end of the sample under the argon atmosphere to complete the combustion process without any additional energy. Not only could this method shorten the processing time, but also it could minimize the sintering temperature in the production. As a result, the product showed definite peaks of lanthanum galliumin X-ray diffraction (XRD) patterns and the product could be sintered at a lower temperature 1473 K by SPS method, in comparison to a conventional solid-state reaction method. Moreover, the sintering temperature of the products could further decrease in a lower temperature 1273K after ball-mill treatment. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/39307 |
| Appears in Collections: | エネルギー・マテリアル融合領域研究センター (Center for Advanced Research of Energy and Material) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 謝 豊帆
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