Synthesis and microstructure of continuous composite ceramic fibres of ZrC/ZrB₂-SiC derived from polymeric precursors

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• 作者：Xiaoxu Lv^a ; ^b ; Shouquan Yu^a ; Min Ge^a ; Yuelong Tian^a ; ^b ; Weigang Zhang^a ; ^{wgzhang@ipe.ac.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Composite ceramic fibres ; Nanoscale ; Dispersed ; Tensile strength
• 刊名：Ceramics International
• 出版年：2016
• 出版时间：15 May 2016
• 年：2016
• 卷：42
• 期：7
• 页码：9299-9303
• 全文大小：1581 K

文摘

Continuous composite ceramic fibres of ZrC–SiC and ZrC–ZrB₂–SiC were synthesized via melt spinning and pyrolysis of a novel polymeric precursor, polyzirconocenecarbosilane (PZCS), with or without the addition of polymethylaminoborazine (PBN) as a boron source. The resultant fibres had mass concentrations of zirconium carbide, diboride, or both of approximately 15%. Their microstructures exhibited nanoscale ZrC and ZrB₂ particles dispersed in a continuous SiC matrix containing free carbon. The tensile strength of the fibres was approximately 1 GPa.