Review on plasma sprayed oxidation resistant coatings for C/C composites

Oxidation sensitivity is a critical obstacle to the rapid development of carbon/carbon(C/C) composites as the thermal structural materials in aerospace applications. Currently, surface coating technology is the most effective method to achieve the long-term stable service of C/C composites in high temperature oxygen-containing environments. Among them, plasma spraying technology, which has been widely used in the preparation of thermal barrier coatings for aero-engines, has attracted much attention. In this paper, starting from the plasma sprayed high-temperature oxidation resistant coatings for C/C composites, domestic and international research progress of boride, silicide and oxide based oxidation resistant coatings have been reviewed, the protective properties based on different spraying technologies, composition/structure designs and service conditions have been compared and summarized, and the prospect future for subsequent research in this field has been proposed.