| Si3N4—Al2O3复相陶瓷的抗热震性与晶界脆化 |
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| 引用本文： | 穆柏椿,贾天敏.Si3N4—Al2O3复相陶瓷的抗热震性与晶界脆化[J].硅酸盐通报,1994,13(5):28-31. |
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| 作者姓名： | 穆柏椿 贾天敏 |
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| 作者单位： | 辽宁工学院
(穆柏椿，贾天敏)，辽宁工学院(谷志刚) |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 对Ｓｉ３Ｎ４－Ａｌ２Ｏ３复相陶瓷的抗热震性能进行了检测和分析。经Ｘ射线衍射，ＳＥＭ和能谱分析表明，材料的热震损伤与晶脆化有关，造成沿晶脆断的主要原因是Ｃａ等杂质元素在晶界的偏聚。采取退火热处理可使非晶相结晶化，提高陶瓷材料的抗热震性。
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| 关 键 词： | 复相陶瓷 抗热震性 晶界脆化 |
Intergranular Embrittlement and Thermal Shock Resistance of Si_3N_4-A1_2O_3 Multiphase Ceramics |
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| Mu Baichun Jia Tianming Gn Zhigang.Intergranular Embrittlement and Thermal Shock Resistance of Si_3N_4-A1_2O_3 Multiphase Ceramics[J].Bulletin of the Chinese Ceramic Society,1994,13(5):28-31. |
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| Authors: | Mu Baichun Jia Tianming Gn Zhigang |
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| Affiliation: | Liaoning Institute of Technology |
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| Abstract: | The thermal shock resistance of Si3N4 -Al2O3 multiphase ceramics is examined and analyzed. The results obtained by XRD.SKM and EDS show that the thermal shock damage is related to the intergranular embrittlenient ,the principal reason of intergranular brittle fracture is the segregation of Ca and other impurities along grain boundaries. Crystallization of non- crystalline phase and improvement of thermal shock resistance can be achieved by annealing. |
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| Keywords: | Si3N4 A12O3 multiphase ceramics thermal shock resistance intergranular emnrittlement annealing treatment impurities segregation |
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