生物质基SiC陶瓷制备的研究进展

Research Progress on Preparation for Biomass-based SiC Ceramic

传统工艺制备的碳化硅(SiC)陶瓷性能优异,应用前景广阔,但高温制备造成的成本增加限制了其进一步发展。相比之下,生物质因其自身丰富的孔隙结构成为低温制备SiC陶瓷的理想替代品。本文综述了生物质基SiC陶瓷的结构特性、制备方法、热解机理和影响因素,并探讨碳源和硅源预处理、热解工艺以及应用研究等在制备生物质基SiC陶瓷中存在的问题和发展趋势。

Silicon carbide(SiC)ceramics prepared by the conventional process has excellent properties and wide application prospects,but the increased cost of high-temperature preparation process restricts its further development.In contrast,the abundant porous structure of biomass makes itself to be ideal replacement of SiC ceramic prepared at low temperature.This paper reviewed the structure characteristics,preparation methods,pyrolysis mechanism and influence parameters of biomass-based SiC ceramic,and eventually explored the current problems and development trends of the pretreatment of carbon source and silicon source,the pyrolysis process and the application research on the preparation for biomass-based SiC ceramic.