| C纤维和SiC纤维增强SiC基复合材料微观结构分析 |
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| 引用本文： | 冯倩,王文强,王震,杨金山.C纤维和SiC纤维增强SiC基复合材料微观结构分析[J].实验室研究与探索,2010,29(1). |
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| 作者姓名： | 冯倩 王文强 王震 杨金山 |
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| 作者单位： | 1. 东华大学分析测试中心,上海,201620
2. 上海硅酸盐研究所,上海,200050 |
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| 摘 要： | 为减缓由于碳纤维与碳化硅基体热膨胀系数差异导致的微裂纹的产生,同时采用了C、SiC纤维作为增强体,通过有机前驱体浸渍裂解法(PIP)制备了(C-SiC)f/SiC复合材料,并通过扫描电子显微镜对复合材料的显微结构进行了分析,研究了复合材料中纤维排布方式以及基体相组成。研究发现,采用扫描电子显微镜的方法能够清晰地分辨出复合材料中各相的存在形式。从复合材料抛光面分析可以发现,在纤维束交错处存在束间基体聚集区域。复合材料基体主要由具有不同衬度的两相组成,分别是由含纳米SiC粉体浆料裂解产物和有机聚合物前驱体(PCS)裂解产物。PCS裂解产物主要呈带状,分布在浆料裂解过程中形成的裂纹和微孔中。
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| 关 键 词： | 陶瓷基复合材料 微观结构分析 基体相组成 纤维增强体分布 |
Microstructure Analysis of SiC Matrix Composites Reinforced by Carbon Fibers and SiC Fibers |
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| FENG Qian,WANG Wen-qiang,WANG Zhen,YANG Jin-shan.Microstructure Analysis of SiC Matrix Composites Reinforced by Carbon Fibers and SiC Fibers[J].Laboratory Research and Exploration,2010,29(1). |
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| Authors: | FENG Qian WANG Wen-qiang WANG Zhen YANG Jin-shan |
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| Institution: | FENG Qian~1,WANG Wen-qiang~1,WANG Zhen~2,YANG Jin-shan~2(1.Analysis , Testing Center,Donghua University,Shanghai 201620,China,2.Shanghai Institute of Ceramics,Shanghai 200050,China) |
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| Abstract: | In order to alleviate the thermal expansion coefficient mismatch between carbon fiber reinforcements and SiC matrix,carbon fibers and SiC fibers were applied as reinforcements at the same time to fabricate composite by polymer infiltration and pyrolysis(PIP).Microstructures of composites on the polished cross-section were characterized by scanning electron microscopy(SEM).It was shown that the phase distribution could be clearly distinguished by SEM.It can be found from the microstructure of(C-SiC)_f/SiC co... |
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| Keywords: | ceramic matrix composite microstructure analysis matrix phases fiber distribution |
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