| Nicalon/Sic复合材料高温蠕变后的显微特征 |
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| 引用本文： | 徐志跃.Nicalon/Sic复合材料高温蠕变后的显微特征[J].西南石油大学学报（社会科学版）,2019,11(3):58-64. |
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| 作者姓名： | 徐志跃 |
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| 作者单位： | （西南石油学院石油机械系） |
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| 摘 要： | 本研究利用电子探针和扫描电子显微镜(SEM)对高温蠕变Nicalon/Sic复合材料进行了纤维/基体介面的成份和断口形貌分析。分析表明,Nicalon/Sic复合材料的蠕变断裂是一个复杂的、非突发性的脆性断裂过程。同时本文采用挤压法半定量地测定了纤维—基体结合键强度,从而揭示了FCVI纤维涂层提高材料断裂韧性的纤维拨出机理。
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| 关 键 词： | 复合材料 蠕变失效 脆性断裂 显微裂纹 结合键强度 |
| 收稿时间： | 1989-01-21 |
MICROSTRUCTURAL CHARACTERISTICS OF NICALON/SIC COMPOSITES CREEP-TESTED AT ELEVATED TEMPERATURE |
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| Xu Zhi-yue.MICROSTRUCTURAL CHARACTERISTICS OF NICALON/SIC COMPOSITES CREEP-TESTED AT ELEVATED TEMPERATURE[J].Journal of Southwest Petroleum University(Social Sciences Edition),2019,11(3):58-64. |
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| Authors: | Xu Zhi-yue |
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| Institution: | （Department of Mechanical Engineering） |
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| Abstract: | The composition of fiber-matrix boundaries and the fractography of fracture surfaces in Nicalon/Sic composites have been analyzed by means of Electron Microprobe and Scanning Eletron Microscope (SEM) . The analysis shows that the creep failure of Nicalon/Sic composites is a completed and no-sudden brittle fracture process. Also, fiber-matrix bond strength has been semi-quantitatively evaluated by using indentation methods, and so the fiber pull-oot mechanism for increasing fracture toughness has been presented |
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| Keywords: | Composite Creep failure Brittle fracture M |
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