| 掺杂Al_2O_3的CeO_2材料显微形貌观察 |
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| 引用本文： | 董向红,梁广川,刘文西,陈玉如. 掺杂Al_2O_3的CeO_2材料显微形貌观察[J]. 陶瓷研究与职业教育, 2000, 0(2) |
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| 作者姓名： | 董向红 梁广川 刘文西 陈玉如 |
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| 作者单位： | 天津大学材料学院!天津,300072,天津大学材料学院!天津,300072,天津大学材料学院!天津,300072,天津大学材料学院!天津,300072 |
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| 摘 要： | 对掺杂Al2O3的CeO2基固体电解质材料表面及断口形貌进行了扫描电子显微镜观察。实验发现,Al2O3可以起到有效的强化晶界作用,使断裂形式由沿晶断裂变为穿晶断裂为主。分析认为,Al2O3的强化作用是由于两方面的因素造成的：首先是掺杂Al2O3会导致压缩性应力,其次是晶界处的Al2O3使微裂纹偏转。
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| 关 键 词： | Al_2O_3 CeO_2 固体电解质 强度 形貌 |
SEM Observation of Ceria-based Electrolyte Doped with Al_2O_3 |
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| Dong Xianghong,Liang Guangchuan,Liu Wenxi,Chen Yuru. SEM Observation of Ceria-based Electrolyte Doped with Al_2O_3[J]. Ceramic Research and Vocational Education, 2000, 0(2) |
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| Authors: | Dong Xianghong Liang Guangchuan Liu Wenxi Chen Yuru |
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| Abstract: | The surface and fracture morphologies of CeO2-based electrolyte materials doped withAl2O3 were observed with SEM. It was foun that Al2O3 could toughen the grain bodew of CeO2-basedelectrolyte,and cause fracture transgranular instead of intercrystalline. The reason was that doping Al2O3could bring on compressive stress and prevent the micro-crack from propagation. On the other hand, Al2O3distributed in the grain boundary and caused the crack deflection. |
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| Keywords: | Al_2O_3 CeO_2 solid electrolyte strength morphology |
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