| Sr_(0.5)Sm_(0.5)CoO_3超细陶瓷粉体的制备与性能 |
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| 引用本文： | 孟波,谭小耀,白丽,柳玉英.Sr_(0.5)Sm_(0.5)CoO_3超细陶瓷粉体的制备与性能[J].硅酸盐学报,2010,38(1). |
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| 作者姓名： | 孟波 谭小耀 白丽 柳玉英 |
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| 作者单位： | 山东理工大学化工学院,山东,淄博,255049 |
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| 基金项目： | 国家自然科学基金(20676073);;山东省自然基金(Y2007F18,Y2008B07)资助项目 |
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| 摘 要： | 采用低温燃烧法和共沉淀法制备了Sr0.5Sm0.5CoO3(SSC)超细陶瓷粉体。应用综合热分析、X射线衍射仪、扫描电子显微镜和元素分析仪等对陶瓷粉体的组成、结构和形貌进行了表征。结果表明:采用低温燃烧法制备的SSC为近似球形、粒径小于200nm的超细钙钛矿结构的粉体;用共沉淀法制备了粒径约为500nm,具有钙钛矿结构的SSC超细粉体。低温燃烧法制备的SSC粉体在1150℃烧结致密,共沉淀法制备的SSC粉体在1200℃烧结致密。低温燃烧法和共沉淀法制备的SSC陶瓷膜在空气流速为1.12×10-4mol/s,氦气流速为6.70×10-5mol/s,900℃的条件下,透氧速率分别为4.61×10-7mol/(s·cm2)和4.46×10-7mol/(s·cm2)。
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| 关 键 词： | 固体电解质 氧渗透 超细陶瓷粉 共沉淀 低温燃烧 |
PREPARATION AND CHARACTERIZATIONS OF ULTRAFTNE Sr_(0.5)Sm_(0.5)CoO_3 CERAMIC POWDER |
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| MENG Bo,TAN Xiaoyao,BAI Li,LIU Yuying.PREPARATION AND CHARACTERIZATIONS OF ULTRAFTNE Sr_(0.5)Sm_(0.5)CoO_3 CERAMIC POWDER[J].Journal of The Chinese Ceramic Society,2010,38(1). |
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| Authors: | MENG Bo TAN Xiaoyao BAI Li LIU Yuying |
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| Affiliation: | School of Chemical Engineering;Shandong University of Technology;Zibo 255049;Shandong;China |
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| Abstract: | Ultrafine Sr0.5Sm0.5CoO3 (SSC) ceramic powders with homogeneous composition were prepared via a low temperature combustion process and a coprecipitation process,respectively.The resultant SSC powders were characterized by X-ray diffraction,scanning electron microscope and energy dispersive spectroscope.The results show that the SSC particles obtained by the low-temperature combustion are near spherical and the particle size is less than 200 nm;and the particles obtained by the coprecipitation process appear... |
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| Keywords: | solid electrolyte oxygen permeation ultrafine ceramic powder coprecipitation low temperature combustion |
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