| SiBCN 陶瓷的抗氧化性能 |
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| 引用本文： | 张宗波.SiBCN 陶瓷的抗氧化性能[J].宇航材料工艺,2012,42(2):91-94. |
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| 作者姓名： | 张宗波 |
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| 作者单位： | 中国科学院化学研究所,北京,100190 |
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| 基金项目： | 国家自然科学基金(NSFC50973113) |
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| 摘 要： | 通过聚合物前驱体热解方法制备了SiBCN陶瓷,对其在1 200℃空气条件下的抗氧化性能进行了研究,并与前驱体法制得的SiCN陶瓷进行了比较。结果表明,SiBCN陶瓷经氧化10 h后样品氧化增重只有0.35%,并且样品中没有裂纹的出现,表现出良好的抗氧化性能。而同样条件下SiCN陶瓷氧化增重达到3.1%,样品出现裂纹。样品表面元素组成分析表明,SiBCN陶瓷表面氧化物主要以SiO2形式存在,而SiCN陶瓷表面主要以SiOx(x<2)存在。
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| 关 键 词： | SiBCN陶瓷 SiCN陶瓷 聚合物前驱体法 抗氧化性能 |
Oxidation Resistance of SiBCN Ceramics |
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| Zhang Zongbo
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Zeng Fan
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Liu Wei
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Luo Yongming
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Xu Caihong.Oxidation Resistance of SiBCN Ceramics[J].Aerospace Materials & Technology,2012,42(2):91-94. |
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| Authors: | Zhang Zongbo Zeng Fan Liu Wei Luo Yongming Xu Caihong |
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| Institution: | Zhang Zongbo Zeng Fan Liu Wei Luo Yongming Xu Caihong(Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190) |
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| Abstract: | The oxidation behavior of SiBCN ceramics,derived from pyrolysis of polymeric precursor,was inves-tigated by oxidizing the SiBCN ceramics at 1 200℃ under air for different time.As a reference,SiCN ceramic was studied using the same process.The results show that after oxidation for 10 h,the weight gain of SiBCN is only 0.35% and the ceramic keeps its original morphology without cracks.Whereas,the oxidation of SiCN results in a weight gain of 3.10% and cracks.The elemental composition of the sample surface is mainly SiO2 for SiBCN and SiOx(x<2) for SiCN ceramics,respectively. |
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| Keywords: | SiBCN ceramics SiCN ceramics Polymeric precursor Oxidation resistance |
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