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C_f/ZrC-ZrB_2-SiC-C超高温陶瓷复合材料的显微结构表征
Authors
周延春
张伟刚
郑丽雅
Publication date
1 January 2012
Publisher
Abstract
利用X-射线衍射、扫描电子显微镜和透射电子显微镜对Cf/ZrC-ZrB2-SiC-C超高温陶瓷复合材料的相组成、纤维/热解碳层的界面特征和超高温陶瓷基体的显微结构特征进行了表征。在碳纤维表面有一层厚度为2~3μm石墨化程度较高的热解碳界面层,该界面层可以避免采用PIP工艺制备超高温陶瓷基体时可能对碳纤维造成的损伤。热解碳层与碳纤维之间为弱机械结合,其界面间分布着20~30 nm的ZrC纳米颗粒。Cf/ZrC-ZrB2-SiC-C超高温陶瓷复合材料基体主要由ZrC,ZrB2,SiC和石墨相(Cg)组成。基体中石墨的(002)面沿着ZrC,ZrB2或SiC的表面生长。在石墨与ZrB2和石墨与SiC的界面没有观察到取向关系,界面处既没有反应层也没有非晶相存在。在石墨与ZrC之间存在ZrC(111)∥Cg(002),ZrC[110]∥Cg[010]的取向关系。ZrB2和SiC之间也没有界面反应和非晶层存在
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Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
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oai:ir.ipe.ac.cn:122111/37083
Last time updated on 05/12/2019
Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:ir.ipe.ac.cn:122111/25249
Last time updated on 08/09/2018