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Si-B-N-C陶瓷纤维的高温抗氧化性 被引量:4

High-Temperature Oxidation of Si-B-N-C Ceramic Fiber
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摘要 将Si-B-N-C陶瓷纤维在静置的空气氛围下分别于1300~1400℃区间内处理不同时间,通过扫描电镜(SEM)观察其微观结构的变化,用X-射线能量色散仪(EDS)、元素分析(EA)表征其截面及内部的元素分布和含量变化,并借助X-射线衍射光谱(XRD)表征氧化处理对纤维晶型变化的影响。结果表明:氧化后的纤维有明显的皮芯结构,并且皮层大致可分为3层,主要由B、N、Si、O元素组成;氧化保护层的存在,很好地阻隔了纤维核心层与外界空气的直接接触,从而保留了纤维本身优异的耐高温性能。 The Si-B-N-C ceramic fiber is treated in an insert air atmosphere with different time/temperature ranging from 1 300℃to 1 400℃.The microstructure is observed by SEM,and its element distribution is studied by EDS and EA.Meanwhile,crystallization is characterized through XRD analysis.The result showes obvious double-layer structure,which can be divided into 3 parts,mainly composed by B/N/Si/ 0.As the existence of protective layer,the fibers remain good high temperature performance by prevented from oxidation.
出处 《合成纤维》 CAS 2012年第8期14-17,26,共5页 Synthetic Fiber in China
基金 国家自然科学基金项目(编号20704005和90916025)
关键词 Si-B-N-C陶瓷纤维 高温抗氧化性 晶型结构 Si-B-N-C ceramic fiber high temperature oxidation resistance microcrystalline structure
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参考文献7

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  • 2孙泽玉,贾军,耿冉,韩克清,余木火.纳米硼化锆(ZrB_2)陶瓷纤维的制备[J].复合材料学报,2013,30(S1):1-6. 被引量:5
  • 3柯盛包,刘勇,张晨宇,王会峰,韩克清,滕翠青,余木火.SiBNC_f/SiBNC陶瓷复合材料抗氧化性能[J].复合材料学报,2015,32(2):477-483. 被引量:2
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  • 7Paul A, Jayaseelan D D, Venugopal S. UHTC composites for hyperson- ic applications [J]. American Ceramic Society Bulletin, 2012, 91(1): 22- 28.
  • 8Monteverde F, Bellosi A, Scatteia L. Processing and properties of ul- tra- high Temperature ceramics for space applications [J]. Materials Sci- ence and Engineering A, 2008, 485: 415-421.
  • 9Khanra A K, Pathak L C, Godkhindi M M. Carbothermal synthesis of zirconium diboride (ZrB2) whiskers [J]. Advances in Applied Ceramics, 2008, 106(3): 155-160.
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