Structural Design and Performance Study of Co-densified Continuous Reticular Cu663/graphite Self-lubricating Composites
Structural Design and Performance Study of Co-densified Continuous Reticular Cu663/graphite Self-lubricating Composites
复制标题
共致密连续网状Cu663/石墨自润滑复合材料的结构设计及性能研究
DOI：
10.1016/j.triboint.2022.108050
复制
发表时间：
2022
影响因子：
6.2
通讯作者：
Yongsheng Zhang
中科院分区：
文献类型：
--
作者：
Shukai Fan;Hengzhong Fan;Jun Cheng;Junjie Song;Yunfeng Su;Guowei Huang;Xiaoyu Zhang;Jun Yang;Litian Hu;Yongsheng Zhang
利用 Cu663 涂层石墨的核壳结构制备了高石墨含量 (40 vol%) 的 Cu663/石墨自润滑复合材料。研究了结构参数对复合材料机械和摩擦学性能的影响，并讨论了其在干摩擦条件下的抗磨损机制。结果表明，复合材料表现出优异的机械和摩擦学性能。复合材料表现出优异的综合力学性能，弯曲强度为144.28 MPa，压缩强度为234.66 MPa，分别比相同石墨含量的均质样品高3.0倍和5.9倍。同时，磨损率降低至5.06×10−6mm3•N−1m−1，比均质样品小一个数量级。
Cu663/graphite self-lubricating composites with a high graphite content (40 vol%) were prepared using the core–shell structures of graphite coated with Cu663. The influence of structural parameters on the mechanical and tribological properties of the composites was investigated, and their anti-wear mechanisms under dry friction conditions were discussed. Results indicated that the composites showed superior mechanical and tribological properties. Composites displayed excellent comprehensive mechanical properties, with a bending strength of 144.28 MPa and a compressive strength of 234.66 MPa, which were 3.0- and 5.9-fold higher than those of the homogeneous sample with the same graphite content, respectively. Meanwhile, the wear rate decreased to 5.06 × 10−6mm3•N−1m−1, which was one order of magnitude smaller than that of the homogeneous sample.