α-Al_2O_3/石墨/双马来酰亚胺自润滑复合材料的研究

Study of Bismaleimide Self-lubricating Composite Materials Fille d with α-Al_2O_3 and Graphite

采用浇铸成型法制备了α- A l2 O3/石墨 /双马来酰亚胺自润滑复合材料 ,考察了α- Al2 O3的含量和粒径对复合材料摩擦学性能的影响 ,用扫描电镜对磨损形貌和磨屑进行了分析 ,并对其磨损机制进行了探讨。结果表明 :α- Al2 O3颗粒大小对摩擦系数、磨损量以及磨损机制有显著影响 ,含 15 0 0目 α- Al2 O3复合材料的摩擦学性能比含 12 0 0目 α- Al2

The bismaleimide self-lubricating composite m aterials filled with α-Al 2O 3 and graphite were made by casting method. The effects of α-Al 2O 3 particles content and size on tribological properties were evaluated. The morphology of wear surface and debris of the composites wer e studied by using scanning electron microscopy, and the wear mechanism of compo site materials were also investigated. The result shows that the size of α-Al 2O 3 particles has great effect on the friction coefficient, wearability and mechanism of the composites. The tribological properties of the composites with 1500 mesh α-Al 2O 3 particles were much better than that of the composites with 1500 mesh α-Al 2O 3 particles.