Carbon fiber reinforced dual-matrix composites (CHM) including carbon fiber reinforced hydroxyapatite-polymer matrix composites (CHM_P) and carbon fiber reinforced hydroxyapatite-pyrolytic carbon matrix composites (CHM_C) have great potential application in the field of artificial hip joints, where a combination of high mechanical strength and excellent biotribological property are required. In this work, the graphene-silicon nitride nanowires (Graphene-Si₃N₄nws) interlocking interfacial enhancement were designed and constructed into CHM for boosting the mechanical and biotribological properties. The graphene and Si₃N₄nws interact with each other and construct interlocking interfacial enhancement. Benefiting from the Graphene-Si₃N₄nws synergistic effect and interlocking enhancement mechanism, the mechanical and biotribological properties of CHM were promoted. Compared with CHM_P, the shear and compressive strengths of Graphene-Si₃N₄nws reinforced CHM_P were increased by 80.0 % and 61.5 %, respectively. The friction coefficient and wear rate were reduced by 52.8 % and 52.9 %, respectively. Compared with CHM_C, the shear and compressive strengths of Graphene-Si₃N₄nws reinforced CHM_C were increased by 145.4 % and 64.2 %. The friction coefficient and wear rate were decreased by 52.3 % and 73.6 %. Our work provides a promising methodology for preparing Graphene-Si₃N₄nws reinforced CHM with more reliable mechanical and biotribological properties for use in artificial hip joints.

碳纤维增强双基复合材料（CHM）包括碳纤维增强羟基磷灰石-聚合物基复合材料（CHM _P）和碳纤维增强羟基磷灰石-热解碳基复合材料（CHM _C）在人工髋关节领域具有巨大的应用潜力，其中需要高机械强度和优异的生物摩擦学性能的结合。在这项工作中，石墨烯-氮化硅纳米线（石墨烯-Si ₃ N ₄ nws）互锁界面增强被设计并构建到CHM中，以提高机械和生物摩擦学性能。石墨烯和Si ₃ N ₄纳米线相互作用并构建互锁界面增强。受益于石墨烯-Si ₃ N ₄ NWS的协同效应和联锁增强机制，CHM的机械和生物摩擦学性能得到提升。与CHM _P相比，石墨烯-Si ₃ N ₄ Nws增强CHM _P的剪切强度和压缩强度分别提高了80.0 %和61.5 %。摩擦系数和磨损率分别降低了52.8%和52.9%。与CHM _C相比，石墨烯-Si ₃ N ₄ Nws增强CHM _C的剪切强度和压缩强度分别提高了145.4 %和64.2 %。摩擦系数和磨损率分别降低了52.3%和73.6%。我们的工作为制备石墨烯-Si ₃ N ₄ NWS 增强 CHM 提供了一种有前景的方法，该材料具有更可靠的机械和生物摩擦学性能，可用于人工髋关节。