SiC具有高温稳定性、高热导率和宽带间隙及好的化学稳定性等优异特性，使其在诸多领域有着广泛的应用，而目前制备SiC的方法存在温度高、能耗大，或工艺复杂、设备投资和运行成本高等不足。本项目借鉴熔盐低温电解SiO2技术，并基于对SiC的熔盐电化学合成的初期研究结果，拟以C/SiO2复合物为原料，研究开发熔盐电化学低温合成微/纳米SiC方法，通过研究熔盐温度、电极电势、反应物组成等因素对C/SiO2复合物的熔盐电化学行为的影响及机制，分析SiC形成的热力学途径和动力学过程，从而明晰熔盐电化学低温合成SiC机理，进而通过优化影响SiC形成热力学和动力学因素，建立熔盐电化学低温合成微/纳米SiC方法,相关研究结果不仅对SiC的低温合成科学技术的发展和SiC生产的节能降耗和减排具有重要意义，而且也将为进一步开拓广泛种类的金属炭化物的熔盐电化学低温合成技术提供实验和理论基础。

Silicon carbides have wide application in many fields due to its thermal stability, high thermal conductivity, wide bandgap and excellent chemical stability,etc. However, the present methods for producing SiC have some disadvantages such as high synthesis temperature resulting large energy consummation, complicated technology, big equipment investment and high operating cost. On basis of technology that electrochemical reduction of SiO2 in molten salt at low temperature, and according to our preliminary results on the synthesis of SiC by molten salt electrochemistry method, we will explore the synthesis technology of micro/nano scale SiC by electrochemical reduction of the composite of C/SiO2.The effects of temperature of molten salt, electrode potential and composition of reactants on electrocehmical behavior of C/SiO2 composite will be studied in order to analyze thermodynamic route and dynamic process of SiC formation and then clear and understand the mechanism of electrochemical synthesis of SiC in molten salt at low temperature. Furthermore, by optimizing the thermodynamic and dynamic factors affecting the formation of SiC, the synthesis method of SiC by electrochemical reduction of C/SiO2 composite in molten salt at low temperature will be set up. The results will have not only important significance on the theoretical and technological development of low-temperature synthesis of SiC and energy conservation for producing SiC, but also supply the experimental and theoretical supports for synthesizing a variety of metal carbides by molten salt electrochemistry method.