碳/碳复合材料表面等离子喷涂高温抗氧化涂层研究进展

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

氧化敏感性是限制碳/碳(C/C)复合材料作为超高温结构材料应用于航空航天领域的关键瓶颈。表面涂层技术是目前在高温含氧环境下有望实现C/C复合材料长时稳定服役的最有效手段。其中,广泛应用于制备航空发动机热防护涂层的等离子喷涂技术备受关注。从C/C复合材料表面等离子喷涂高温抗氧化涂层体系出发,综述了硼化物、硅化物和氧化物基抗氧化涂层的国内外研究进展,基于不同喷涂工艺、成分/结构设计和测试环境下的防护性能进行了对比总结,并对后续该方向研究提出了展望。

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.