Oxidation protective behavior of SiC/Si-MoSi_2 coating for different graphite matrix

摘要

A SiC/Si-MoSi_2 oxidation protective coating was prepared on different graphite matrix, and the oxidation behavior of SiC/Si-MoSi_2 coated on different graphite matrix was also studied. Results showed that the porosity and pore radius of graphite materials had marked effect on the oxidation behavior ability for carbon materials. Appropriate porosity and pore radius are the necessary factors to realize the excellent oxidation resistance in air, and the reason for the different oxidation behavior of coating on different carbon matrix was also analyzed.