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    题名: Effects of lanthanum-based perovskite coatings on the formation of oxide scale for ferritic SOFC interconnect
    作者: Shong,WJ;Liu,CK;Chen,CY;Peng,CC;Tu,HJ;Fey,GTK;Lee,RY;Kao,HM
    贡献者: 化學工程與材料工程學系
    关键词: FUEL-CELLS;METALLIC INTERCONNECTS;CHROMIUM VAPORIZATION;OPERATING-CONDITIONS;STEEL;ALLOY;CONDUCTIVITY
    日期: 2011
    上传时间: 2012-03-27 16:26:52 (UTC+8)
    出版者: 國立中央大學
    摘要: Three lanthanum-based perovskite ceramic compounds, La(0.8)Ca(0.2)CrO(3), La(0.8)Sr(0.2)CrO(3), and La(0.8)Sr(0.2)MnO(3), were coated on ferritic stainless steel by the spin coating technique, and the effects on the formation of oxide scale have been investigated. The coated samples were aged at 800 degrees C in ambient air atmosphere for up to 1600h. After each ageing period, the measurement of electrical area-specific resistance (ASR) was conducted. The evolution of crystalline phases and microstructures of aged samples were examined using the X-ray diffractometer and the scanning electron microscope. It was found that the perovskite pastes could facilitate the growth of (Mn, Cr)(3)O(4) spinel phases with coarser crystalline structures and higher levels of Mn content. After 1600-h ageing, coated samples exhibited an average ASR result of similar to 3 m Omega cm(-2), approximately one-third that of the uncoated sample. The ASR difference was attributed to the Mn content and crystallite size of the spinel phase. (C) 2011 Elsevier B.V. All rights reserved.
    關聯: MATERIALS CHEMISTRY AND PHYSICS
    显示于类别:[化學工程與材料工程學系 ] 期刊論文

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