C/C-SiC摩擦材料是一种以炭纤维为增强增韧相、以炭和碳化硅为双基体的优异自对偶摩擦材料，但与金属对偶件配对摩擦副时动摩擦系数低、磨损大和制动不平稳。以高强金属材料为制动盘的高速高能载制动系统对改性C/C-SiC摩擦材料提出了迫切需求。本项目依据纳米材料学理论设计纳米碳管(CNT)新组元，改善C/C-SiC材料与金属配对摩擦副的摩擦磨损性能。采用催化化学气相沉积法制备纳米碳管，然后分别用化学气相渗透和熔融渗硅法制备炭基体和碳化硅基体，得到CNT改性C/C-SiC摩擦材料。研究改性C/C-SiC材料成分、微结构和界面特性的设计与优化；研究不同制动条件、对偶件和环境下改性C/C-SiC材料与金属对偶件配对摩擦副的摩擦磨损行为及机理；并探讨摩擦副的失效机制及预防措施。通过材料设计，优化制备工艺，获得摩擦磨损机理，为制备与金属对偶具有良好摩擦匹配性的C/C-SiC材料及其应用奠定理论和方法基础。

The carbon fiber reinforced carbon and silicon carbide dual matrix composites (C/C-SiC) are a type of excellent self dual brake materials. But the friction pair of C/C-SiC composites with metal dual material show lower dynamic friction coefficient, higher wear rate and bad stability coefficient. The urgent demand for high-speed and high-energy braking system with high strength metallic brake disc to the modified C/C-SiC friction composites. This project design of carbon nanotubes basis on nano-materials science, which is to improve the tribological properties of the friction pair of C/C-SiC with metal dual material. The carbon nano-tubes were fabricated by catalytic chemical vapor deposition, and carbon matrix were prepared by chemical vapor infiltration, and finally made use of liquid silicon infiltration to prepared the silicon carbide and obtained the modified C/C-SiC composites. The components, microstructure, and the design and optimization of interface of modified C/C-SiC composites have been investigated. The friction behavior and mechanism of the friction pair of C/C-SiC with metal dual material in different braking conditions have been investigated, and the wear failure mechanism and preventive measures have been explored. Design the structure and content of the carbon nanotubes, and optimize the preparation process to lay the theoretical and methodological basis, which for the design C/C-SiC composites which with good matching performance of metal.