题 目：SiC 基纳米陶瓷：先进制备方法、微结构调控与性能研究

　　报告人：余兆菊 教授

　　单 位：厦门大学

　　时 间：2024/1/9 10:00 

　　地 点：海西院2号楼228会议室 

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　　报告摘要：

　　Silicon-based ceramic nanocomposites modified with transition metals such as Mo, Hf and Ta, are effectively synthesized via the single-source-precursor approach. The resultant ceramics possess advanced properties including catalytic activity and electromagnetic (EM） properties, which have to be considered as potential candidate materials for environmental applications. The introduction of Hf and/or Ta results in the in-situ formation of HfyTa1-yCxN1-x-carbon core-shell microstructure together with graphene-like carbon dispersed within the Si-based matrix. Due to the enhanced dielectric properties, Hf and/or Ta containing Si-based ceramic nanocomposites possess excellent EM performance and versatile designability ranging from EM absorbing to shielding behavior. The relationship between the obtained nano/microstructure of the synthesized Si-based ceramics and their property features will be highlighted.

　　报告人简介：

　　余兆菊，厦门大学材料学院教授、中国国投研究院兼职科学家、德国“洪堡学者”，高性能陶瓷纤维教育部重点实验室（厦门大学）执行副主任，入选福建省级高层次人才。2022年，获得美国陶瓷学会“ACerS Global Ambassador”和美国陶瓷学会工程陶瓷部“Jubilee Global Diversity Award”奖。目前，担任《Ceram Int》、《J Am Ceram Soc》和《Int J Appl Ceram Tec》副主编，曾担任《J Eur Ceram Soc》首席客座主编。

　　主要研究方向包括:1）单源聚合物先驱体法制备结构/功能一体化陶瓷； 2）低维纳米功能材料（电、磁、催化等）； 3）有机硅功能高分子材料。