张婧,唐彬彬,韩克清,刘振全,孙泽玉,余木火
ZHANG Jing,TANG Bin-bin,HAN Ke-qing,LIU Zhen-quan,SUN Ze-yu,YU Mu-huo (College of Material Science and Engineering

• 1:东华大学 材料学院 纤维材料改性国家重点实验室

摘要(Abstract)：

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.

关键词(KeyWords)： 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

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(编号20704005和90916025)

作者(Author): 张婧,唐彬彬,韩克清,刘振全,孙泽玉,余木火
ZHANG Jing,TANG Bin-bin,HAN Ke-qing,LIU Zhen-quan,SUN Ze-yu,YU Mu-huo (College of Material Science and Engineering

DOI: 10.16090/j.cnki.hcxw.2012.08.018

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