Ceramic nanocomposites reinforced with a high volume fraction of carbon nanotubes

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• 作者：Kun Yang 杨坤 ; Laifei Cheng ; Linan An…
• 关键词：Key wordscarbon nanotubes ; microindentation ; polymer ; derived ceramic ; SiCN
• 刊名：Journal of Wuhan University of Technology-Mater. Sci. Ed.
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：32
• 期：1
• 页码：47-50
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Materials Science, general;
• 出版者：Wuhan University of Technology
• ISSN：1993-0437
• 卷排序：32

文摘

Multi-walled carbon nanotubes (MWNTs) were incorporated into precursor-derived ceramics made from a polysilazane. A ceramic nanocomposite reinforced with about 35 vol% of carbon nanotubes (CNTs) was fabricated by infiltrating CNT-preform with liquid-phased polymeric precursor followed by pyrolysis. The nanocomposite has a dense structure without micro-cracks. The results reveal that the nanocomposite has lower indentation hardness but higher fracture energy than non-reinforced ceramic from the microindentation tests results. The effect of the CNTs on the mechanical properties of the nanocomposite should be discussed accordingly.