| Si3N4/BN(f)复合材料的相界面 |
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| 引用本文： | 许钫钫,宋澄宇,温树林,马利泰.Si3N4/BN(f)复合材料的相界面[J].无机材料学报,1998,13(1):109-112. |
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| 作者姓名： | 许钫钫 宋澄宇 温树林 马利泰 |
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| 作者单位： | 中国科学院上海硅酸盐研究所;上海200050 |
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| 摘 要： | 本文借助高分辩电子普微镜研究了Ｓｉ３Ｎ４／ＢＦ（ｆ）复合材料的相界面。研究发现，ＢＮ纤维的两端与基体结合牢固，界面不易解离，材料民裂过程中纤维很难拔出。材料的韩性主要通过ＢＮ纤维自身（００１）面上的滑移、撕裂和弯曲以及ＢＮ纤维的侧表与Ｓｉ３Ｎ４颗粒的颗上的解离等途径得以提高．
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| 关 键 词： | 复合材料 相界面 显微结构 氮化硅 氮化硼 |
| 收稿时间： | 1997-1-24 |
| 修稿时间： | 1997-3-31 |
Interfaces in Si3N4/BN(f) Composite |
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| XU Fang-Fang,SONG Cheng-Yu,WEN Shu-Lin,MA Li-Tai.Interfaces in Si3N4/BN(f) Composite[J].Journal of Inorganic Materials,1998,13(1):109-112. |
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| Authors: | XU Fang-Fang SONG Cheng-Yu WEN Shu-Lin MA Li-Tai |
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| Affiliation: | ShanghaiInstituteofCeramics;ChineseAcademyofSciencesShanghai200050China |
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| Abstract: | Interfaces in Si3N4 /BN(f) composite were studied by using high resolution electron microscope (HREM). It was revealed that fibers ends, botll tops and bases, were closely bonded with the matrix grains. Fiber pull-out had hardly any contribution to the improvement in fracture toughness of the composite material. HREM observations suggested that the increased fracture energy absorbed came mainly from sliding, tearing and curving Oil (001) plane of BN fibers and debonding at the interfaces between Si3N4 and side surfaces of BN fibers. |
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| Keywords: | BN fibers composite interfaces microstructure |
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