| Influences of Mechanical Vibration on Rapidly Solidified Al2O3/YSZ Ceramics Prepared by Combustion Synthesis |
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| 作者姓名： | ZHAO Zhong-min ZHANG Long WANG Wei-guo ZHANG Shi-yue |
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| 作者单位： | [1]Institute of Advanced Materials, Mechanical Engineering College, Shijiazhuang 050003, China [2]Science Research Department, Mechanical Engineering College, Shijiazhuang 050003, China [3]Foreign Training Department, Mechanical Engineering College, Shijiazhuang, 050003, China |
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| 基金项目： | National Natural Science Foundation of China （50672131 ） |
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| 摘 要： |
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| 关 键 词： | Al2O3/YSZ 陶瓷基复合材料 燃烧合成 快速凝固 纳米晶 机械振动 |
| 收稿时间： | 2006-08-10 |
| 修稿时间： | 2006-11-06 |
Influences of Mechanical Vibration on Rapidly Solidified Al2O3/YSZ Ceramics Prepared by Combustion Synthesis |
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| ZHAO Zhong-min ZHANG Long WANG Wei-guo ZHANG Shi-yue.Influences of Mechanical Vibration on Rapidly Solidified Al2O3/YSZ Ceramics Prepared by Combustion Synthesis[J].Chinese Journal of Aeronautics,2006,19(B12):27-30. |
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| Abstract: | Al2O3/YSZ composite ceramics was fabricated with combustion synthesis technology, and the influences of mechanical vibration on its microstructures and properties were investigated. It is found that under the mechanical vibration of ever-increasing frequency, increasing combustion temperature, accelerating ceramics/metal liquid-liquid separation and quickening ceramic solidification could not only reduce the average diameter and the size distribution of aligned ZrO2 nano-micron fibers in rod-shaped Al2O3 matrix grains, but also make the randomly-oriented rod-shaped grains finer and increase their aspect ratios. As a result, a remarkable increase in flexural strength and fracture toughness of the ceramics can be observed. |
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| Keywords: | ceramic matrix composite combustion synthesis rapid solidification nanocrystalline microstructure mechanical vibration |
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