Research Progress on Self-Healing and Remanufacturing of Oxidation Resistant Ceramic Coatings
The thermal structural components of aerospace vehicles using carbon fiber reinforced carbon matrix(C/C)composites as raw materials,are facing harsh service conditions and require oxidation resistant ceramic coatings on their surfaces to resist the erosion in thermo-mechanical-oxygenic coupling environments.However,the brittleness of ceramic coatings make them highly susceptible to damage under external forces,posing a serious threat to the service safety of thermal structural components.Driven by the repair needs of oxidation resistant ceramic coatings and based on the damage size of coatings,the self-healing technology for micro damage and the remanufacturing technology for macro damage are introduced.The implementation methods,research status,repair effects,advantages&disadvantages and application scenarios of the two technologies are elaborated.Finally,the future development directions of the self-healing and remanufacturing of oxidation resistant ceramic coatings are discussed.
万方数据
