Abstract Co-continuous composites show improved mechanical properties, thermal performance, and wear resistance owing to their special structural features, and thus they are considered potential wear-resistant materials. In this study, co-continuous SiC3D/Al composites were prepared via pressureless infiltration, and the effects of the foam structure on the friction and wear properties of the composites were investigated. The results revealed that the composites consisted of three phases: a matrix phase, a transition phase, and a strengthening phase. In addition, the transition phase resulted in a strong combination between the Al alloy matrix phase and the SiC strengthening phase. The SiC foam structure in the co-continuous SiC3D/Al composites exhibited an obvious influence on the wear behavior of the composites. The hardness of the composites, the inter-skeleton distance, and the skeleton distribution of the foam structure affected the dispersion and transmission of the load and friction heat during the wear process, which was closely related to the tribological behavior of the composites. Finally, the co-continuous SiC3D/Al composites with 20 pores per inch, which had proper hardness, shorter inter-skeleton distances and a more homogenous skeleton distribution, showed the best wear resistance (the volume wear rate was about 1.0 × 10-6 cm3·m-1·N-1) in this work.

中文翻译：

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泡沫结构对共连续SiC3D/Al复合材料磨损行为的影响

摘要 共连续复合材料由于其特殊的结构特征而表现出更好的机械性能、热性能和耐磨性，因此被认为是潜在的耐磨材料。在本研究中，通过无压渗透制备了共连续 SiC3D/Al 复合材料，并研究了泡沫结构对复合材料摩擦磨损性能的影响。结果表明，复合材料由三相组成：基体相、过渡相和强化相。此外，过渡相导致铝合金基体相和 SiC 强化相之间的强结合。共连续 SiC3D/Al 复合材料中的 SiC 泡沫结构对复合材料的磨损行为有明显影响。复合材料的硬度，骨架间距、泡沫结构骨架分布影响磨损过程中载荷和摩擦热的分散和传递，与复合材料的摩擦学行为密切相关。最后，每英寸 20 个孔的共连续 SiC3D/Al 复合材料具有适当的硬度、较短的骨架间距和更均匀的骨架分布，表现出最好的耐磨性（体积磨损率约为 1.0 × 10-6 cm3·m-1·N-1) 在这项工作中。