| 起始粉末粒径对Al2O3-TiC陶瓷力学性能的影响 |
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| 引用本文： | 尤显卿,斯庭智,任萍萍,刘宁.起始粉末粒径对Al2O3-TiC陶瓷力学性能的影响[J].兵器材料科学与工程,2004,27(5):17-19. |
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| 作者姓名： | 尤显卿 斯庭智 任萍萍 刘宁 |
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| 作者单位： | 合肥工业大学,材料科学与工程学院,安徽,合肥,230009;合肥工业大学,材料科学与工程学院,安徽,合肥,230009;合肥工业大学,材料科学与工程学院,安徽,合肥,230009;合肥工业大学,材料科学与工程学院,安徽,合肥,230009 |
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| 摘 要： | 热压烧结制备了Al2O3和Al2O3-TiC复合陶瓷。研究了起始粉末粒径对Al2O3-TiC复合陶瓷力学性能的影响。试验结果表明,添加TiC显著地提高了氧化铝陶瓷的力学性能,σf和K1c分别提高了70％和90％。其中大颗粒TiC对氧化铝陶瓷的增韧尤为有利,其裂纹偏转增长了扩张路径,提高了材料的断裂抗力。
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| 关 键 词： | Al2O3-TiC复合陶瓷 粉末粒径 力学性能 裂纹偏转 |
| 文章编号： | 1004-244X(2004)05-0017-03 |
| 修稿时间： | 2001年3月1日 |
Effect of the starting powder size on the mechanical properties of Al2O3-TiC composite |
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| YOU Xian - qing,SI Ting - zhi,REN Ping - ping,LIU Ning.Effect of the starting powder size on the mechanical properties of Al2O3-TiC composite[J].Ordnance Material Science and Engineering,2004,27(5):17-19. |
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| Authors: | YOU Xian - qing SI Ting - zhi REN Ping - ping LIU Ning |
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| Abstract: | In this paper, Al2O3 ceramics and Al2O3 - TiC composite ceramics were synthesized by hot press sintering, and the effect of starting powder size on the mechanical properties of Al2O3 - TiC composites was studied. The results showed that the mechanical properties can be greatly improved by addition of TiC into alumina ceramics, the σf and KIC increase 70% and 90% respectively. The coarse particle of TiC helps increase toughness of Al2O3 - TiC ceramic and lengthens the route of cracks deflection, thus increasing the fracture resistance. |
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| Keywords: | Al2O3 - TiC composite powder size mechanical properties crack deflection |
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