施加高性能防护涂层是改善C/C复合材料的抗超高温氧化性能（>1600℃）进而促进其应用的重要途径。提出在C/C复合材料上采用包埋法制备SiC底层，再采用电弧离子镀交替沉积制备 ZrN/TaN微叠层复合涂层的设计理念。明确兼具抗氧化和热冲击性能的微叠层结构、ZrN和TaN亚层厚度范围及多弧离子镀制备工艺。研究复合涂层抗超高温氧化行为及抗热冲击性能，重点研究ZrN/TaN微叠层复合涂层微观结构，特别是ZrN和TaN亚层厚度和厚度比对C/C复合材料抗超高温氧化行为的作用机制，明了复合涂层微观结构的高温演变规律以及性能退化机理。利用有限元方法分析涂层在受热应力条件下裂纹的产生与扩展过程，优化涂层微结构设计，确定微叠层复合涂层的微观结构与抗热震性能的内在关联性。研究可深化对微叠层复合涂层的超高温氧化机理及受热应力破坏行为的认识，同时对发展新型高性能防护涂层体系具有指导意义

Applying high-performance protective external coatings is one of the important methods for improving the oxidation resistance of C/C composites at ultra-high temperatures (above 1600℃). In this project, a multilayer coating system, composed of a SiC inner layer and alternating ZrN and TaN outer layers, is proposed. Pack cementation and multi-arc ion plating techniques will be used for the preparation of the SiC inner layer and the transition metal nitride outer layers, respectively. Emphatically, the optimal arc ion plating of the ZrN/TaN laminated outer layers with different alternating structures and thicknesses will be investigated, the effects of the layer structures and the alternating thickness of ZrN and TaN sub-layer, on the ultra-high temperature oxidation resistance and thermal shock resistance of C/C composites will be studied using oxyacetylene torch (high gas flow) and induction heating (low gas flow) techniques. By scanning electron microscope (SEM) observations of the microstructure evolution and finite element analysis (FEA) of the thermal stress and cracking behavior, the oxidation and degradation mechanisms of the as-prepared coatings can be explored profoundly. In this way, the relationship between the microstructure of the coating system and its oxidation and thermal shock resistance can be well established, which is of great importance for the design of new desirable coating systems for C/C composites.