Nano SiC layer is innovatively introduced into carbon nanotubes/Al (CNTs/Al) interface to improve the interface bonding and control the interface reaction between CNTs and Al matrix. SiC-cladded CNTs (CNTs@SiC) reinforced aluminum matrix composites (AMCs) were prepared by variable speed ball milling process-powder metallurgy-hot extrusion route. The results show that the introduction of SiC layer hinders the occurrence of interfacial reaction between CNTs/Al and inhibits the formation of Al₄C₃ brittle phase which should improve the structural stability of AMCs. The dispersive CNTs@SiC reinforcements play an effective pinning role in the sintering process of AMCs at high temperature, which inhibits the growth and mergence of Al matrix grains. Nano SiC transition layer transforms the reactive interface of CNTs/Al₄C₃/Al into the diffusion and mechanical interface of CNTs/SiC/Al, which improves the wettability and interface bonding between Al matrix and CNTs@SiC reinforcements. It also acts as a firm bridge to transfer physical information such as stress and phonon, which effectively promotes the load transfer efficiency between Al and CNTs. Accordingly, the tensile strength and elongation of [email protected] reach 190 MPa and 22.9 %, which shows further improvement in strength-ductility matching for CNTs reinforced AMCs while maintaining the good electrical conductivity and structural stability of Al matrix.

纳米碳化硅层创新地引入碳纳米管/铝（CNTs/Al）界面，以改善界面结合并控制碳纳米管与铝基体之间的界面反应。采用变速球磨-粉末冶金-热挤压工艺制备了碳化硅包覆碳纳米管(CNTs@SiC)增强铝基复合材料(AMCs)。结果表明，SiC层的引入阻碍了CNTs/Al界面反应的发生，抑制了Al ₄ C ₃的形成。脆性相，应提高 AMC 的结构稳定性。分散的CNTs@SiC增强材料在AMCs的高温烧结过程中起到有效的钉扎作用，抑制了Al基体晶粒的生长和合并。纳米SiC过渡层将CNTs/Al ₄ C ₃ /Al的反应界面转变为CNTs/SiC/Al的扩散和机械界面，提高了Al基体与CNTs@SiC增强材料之间的润湿性和界面结合。它还充当传递应力和声子等物理信息的牢固桥梁，有效提高了 Al 和 CNT 之间的负载传递效率。因此，[email protected]的拉伸强度和伸长率 达到 190 MPa 和 22.9 %，这表明在保持 Al 基体良好的导电性和结构稳定性的同时，CNTs 增强的 AMC 的强度-延展性匹配得到进一步改善。