Fabrication of modified ultra high-temperature ceramic hybrid powders using in situ grown SiC nanowires

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• 作者：Zhengxiang Zhong^a ; Liwen Yan^b ; Li Liu^a ; ^{liuli_hit1@163.com} ; Baosheng Xu^c ; ^{xubaosheng211@163.com} ; ^{baoshengxu@mail.tsinghua.edu.cn}
• 关键词：Ceramics ; SiC nanowires ; ZrB2 ; Microstructure
• 刊名：Ceramics International
• 出版年：2017
• 出版时间：15 February 2017
• 年：2017
• 卷：43
• 期：3
• 页码：3462-3464
• 全文大小：551 K
• 卷排序：43

文摘

Ultra-high temperature ceramic (UHTC) hybrid powders modified using in situ grown SiC nanowires (SiCNWs) were successfully prepared via a simple catalytic method. The self-produce carbon and silicon source promoted the growth of SiCNWs during the pyrolysis process of ZrB2 polymer precursors coated ZrB2-SiC powders. The results showed that the growth of SiCNWs could be explained by a tip-growth model and vapor–liquid–solid (VLS) growth mechanism. The SiCNWs with diameter of 200 nm were single crystalline, and the content could be controlled by changing the catalyst content.