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LaCrO_3の熱膨張性と導電性に及ぼすTi置換の影響


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Title: LaCrO_3の熱膨張性と導電性に及ぼすTi置換の影響
Other Titles: Influence of Ti Substitution on the Thermal Expansion and Electrical Conductive Properties of LaCrO3
Authors: 佃, 洋 / 井上, 好章 / 内山, 休男
Authors (alternative): Tsukuda, Hiroshi / Inoue, Yoshiaki / Uchiyama, Yasuo
Issue Date: Mar-2004
Publisher: 日本セラミックス協会
Citation: Journal of the Ceramic Society of Japan, 112(1303), pp.167-171; 2004
Abstract: Linear thermal expansion and electrical conductivity of titanium substituted LaCrO_3 have been studied as ceramic interconnect materials in high-temperature solid oxide fuel cells. The transition temperature from orthorhombic to rhombohedral symmetry has a tendency to increase with decreasing Ti content in the perovskites. At Ti content ≧0.2, the phase transition was not observed in the temperature range from room temperature to 1273 K. Average linear thermal expansion coefficient of the Ti substituted perovskites increased with increasing Ti content and approaches that of 8 mol%Y_2O_3 stabilized ZrO_2 electrolyte. Electrical conductivity of the lanthanum chromites decreased with increasing Ti content.
Keywords: Solid oxide Fuel cell / Interconnector / LaCrO_3 / Ti / Thermal expansion / Electrical conductivity / Activation energy
URI: http://hdl.handle.net/10069/22054
ISSN: 09145400
DOI: 10.2109/jcersj.112.167
Rights: Copyright (c) 2004 The Ceramic Society of Japan
Type: Journal Article
Text Version: publisher
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/22054

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