| SiO2-AlN复合材料的力学性能和显微结构 |
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| 引用本文： | 吴洁华,李包顺,郭景坤. SiO2-AlN复合材料的力学性能和显微结构[J]. 复合材料学报, 2001, 18(1): 83-88 |
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| 作者姓名： | 吴洁华 李包顺 郭景坤 |
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| 作者单位： | 中国科学院 上海硅酸盐研究所, 上海 100050 |
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| 摘 要： | 热压制备了SiO2-AlN复合材料。第二相AlN的引入有助于SiO2基复合材料力学性能的提高。1400℃下热压烧结的30 vol%AlN-SiO2复合材料的抗弯强度和断裂韧性分别达200 MPa和2.96 MPa·m1/2。XRD分析说明直至1400℃ SiO2与AlN未发生化学反应,化学相容性好。利用SEM和TEM分析了SiO2-AlN复合材料的显微结构及其补强机制。
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| 关 键 词： | 石英 氮化铝 复合材料 力学性能 显微结构 |
| 文章编号： | 1000-3851(2001)01-0083-06 |
| 收稿时间： | 1999-07-28 |
| 修稿时间： | 1999-07-28 |
MECHANICAL PROPERTIES AND MICROSTRUCTURE OF SiO2-AlN COMPOSITES |
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| WU Jie-hua,LI Bao-shun,GUO Jing-kun. MECHANICAL PROPERTIES AND MICROSTRUCTURE OF SiO2-AlN COMPOSITES[J]. Acta Materiae Compositae Sinica, 2001, 18(1): 83-88 |
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| Authors: | WU Jie-hua LI Bao-shun GUO Jing-kun |
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| Affiliation: | Shanghai Institute of Ceramics, Chinese Academy of Sciences,Shanghai 200050,China |
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| Abstract: | SiO2-AlN composites were prepared by hot-pressing process. Mechanical properties of SiO2 matrix can be greatly improved after incorporating AlN particles. Flexural strength and fracture toughness of SiO2-AlN composites with 30 vol% AlN particles sintered at 1400℃ reached 200 MPa and 2.96 MPa*m1/2 respectively. XRD analysis indicated that no chemical reaction occurred between SiO2 matrix and AlN particles suggesting that SiO2 matrix had excellent chemical compatibility with AlN particles. Microstructure of the as-sintered composites was investigated with SEM and TEM analysis. The relationship among the phase composition and microstructure and mechanical properties was discussed. |
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| Keywords: | silica aluminum nitride composites mechanical properties microstructure |
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