| Y2O3与Gd2O3共掺杂SrZrO3热障涂层材料的热物理性能 |
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| 引用本文： | 马文,宋峰雨,董红英,许萍,伦文山,郑学斌. Y2O3与Gd2O3共掺杂SrZrO3热障涂层材料的热物理性能[J]. 无机材料学报, 2012, 0(2): 209-213 |
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| 作者姓名： | 马文 宋峰雨 董红英 许萍 伦文山 郑学斌 |
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| 作者单位： | 内蒙古工业大学材料科学与工程学院;内蒙古工业大学化工学院;中国科学院上海硅酸盐研究所特种无机涂层重点实验室 |
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| 基金项目： | 国家自然科学基金(51062012);教育部重点项目(210035);内蒙古自然科学基金(2009BS0802);中国科学院特种无机涂层重点实验室开放课题基金~~ |
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| 摘 要： | 采用固相反应法合成了5mol%Y2O3与5mol%Gd2O3共掺杂SrZrO3(Sr(Zr0.9Y0.05Gd0.05)O2.95,SZYG)粉末.采用X射线衍射(XRD)和差示扫描量热仪(DSC)分别研究了SZYG粉末在1450℃长期热处理后以及200~1400℃范围内的相稳定性.采用高温热膨胀仪测量了SZYG块材的热膨胀系数,结果表明:通过Y2O3与Gd2O3共掺杂改性可以明显抑制SrZrO3的相转变.在1000℃下SZYG块材的热导率是～1.36 W/(m.K),与SrZrO3和8YSZ块材相比降低~35%SZYG分别与8YSZ和Al2O3在1250℃热处理24 h表现出很好的化学相容性.
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| 关 键 词： | 热障涂层 钙钛矿 热物理性能 稀土氧化物 |
Thermophysical Properties of Y2O3 and Gd2O3 Co-doped SrZrO3 Thermal Barrier Coating Material |
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| MA Wen,SONG Feng-Yu,DONG Hong-Ying,XU Ping,LUN Wen-Shan,ZHENG Xue-Bin. Thermophysical Properties of Y2O3 and Gd2O3 Co-doped SrZrO3 Thermal Barrier Coating Material[J]. Journal of Inorganic Materials, 2012, 0(2): 209-213 |
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| Authors: | MA Wen SONG Feng-Yu DONG Hong-Ying XU Ping LUN Wen-Shan ZHENG Xue-Bin |
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| Affiliation: | 1.School of Materials Science and Engineering,Inner Mongolia University of Technology,Huhhot 010051,China;2.School of Chemistry Engineering,Inner Mongolia University of Technology,Huhhot 010051,China;3.Key Laboratory of Inorganic Coating Materials,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,China) |
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| Abstract: | Y2O3(5mol%) and Gd2O3(5mol%) co-doped SrZrO3(Sr(Zr0.9Y0.05Gd0.05)O2.95,SZYG) was synthesized by solid state reaction method.The phase stability of the SZYG powder synthesized at high temperature of 1450℃ for a long period and at temperature range of 200 1400℃ was characterized by XRD and DSC,respectively.The coefficients of thermal expansion(CTEs) of bulk SZYG recorded by a high-temperature dilatometer show that the phase transitions of SrZrO3 is suppressed remarkably by co-doping Y2O3 and Gd2O3.The thermal conductivity of bulk SZYG at 1000℃ is 1.36 W/(m.K),which is 35% lower than that of bulk SrZrO3 and 8YSZ.The good chemical compatibility of SZYG with 8YSZ and Al2O3,is detected after heat-treatment at 1250℃ for 24 h. |
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| Keywords: | thermal barrier coatings perovskite thermophysical properties rare earth oxides |
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