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比较了 Si C和 Gr颗粒混杂增强 Al基复合材料的干摩擦磨损行为 ,并与单一 Si CP和单一 Gr P增强 Al基复合材料的相应行为进行了比较。结果表明 ,在低载荷 (<30 N)时 ,Si CP和 Gr P能协调作用 ,使混杂复合材料的摩擦系数和磨损率均比单一 Si CP和 Gr P增强复合材料低。在较高载荷 (30～ 12 0 N)时 ,混杂复合材料磨损以剥层磨损机制为主 ,摩擦系数比单一 Si CP增强复合材料低 ,磨损率比单一 Gr P增强复合材料低得多 ,比单一 Si CP增强复合材料高。混杂复合材料对偶件的磨损比单一 Si CP增强复合材料低得多
The dry friction and wear behaviors of Al-based composites reinforced by SiC and Gr particles were compared and compared with those of single SiCP and single GrP reinforced Al matrix composites. The results show that at low load (<30 N), Si CP and Gr P can work together to make the friction coefficient and wear rate of the hybrid composite lower than that of the single Si CP and Gr P composite. At higher loadings (30-1200 N), the wear of hybrid composites is dominated by the wear mechanism of the delamination layer. The friction coefficient is lower than the single Si CP reinforced composite and the wear rate is much lower than the single Gr P reinforced composite. Single Si CP reinforced composite high. The wear of the hybrid composite pair is much lower than the single Si CP reinforced composite