Tribological behavior and lubrication mechanism of h-BN/ceramic composites: Effects of h-BN platelet size and ceramic phase
Tribological behavior and lubrication mechanism of h-BN/ceramic composites: Effects of h-BN platelet size and ceramic phase
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DOI：
10.1016/j.triboint.2023.108722
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发表时间：
2023-09
影响因子：
6.2
通讯作者：
Q. Sun;Junjie Song;Shuna Chen;Junqin Shi;Xiaoyu Zhang;Yunfeng Su;Hengzhong Fan;Litian Hu;Yongsheng Zhang
中科院分区：
文献类型：
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作者：
Q. Sun;Junjie Song;Shuna Chen;Junqin Shi;Xiaoyu Zhang;Yunfeng Su;Hengzhong Fan;Litian Hu;Yongsheng Zhang
h- bn血小板的大小使润滑相从材料内部挤压到摩擦表面的效率发生了显著变化，影响了润滑膜的形成和摩擦系数。h- bn / sio2复合材料中- bn尺寸为7µm时，bn释放效率最高，摩擦系数最低（0.20）。此外，h- bn相和陶瓷相的结合力与其摩擦系数呈负相关。两相之间的高结合力有助于h- bn的释放效率和磨粒的“捕获”，从而形成连续的润滑膜和低摩擦系数。si3n4与h- bn之间的结合力最高，导致高bn释放效率和较好的摩擦系数（0.21）。
Theh-BN platelet size causes significant changes in the efficiency of extruding the lubricant phase from the material interior onto the friction surface, affecting the lubricating films forming and friction coefficient. The highesth-BN release efficiency was achieved whenh-BN size in theh-BN/SiO2composite was 7 µm, causing the lowest friction coefficient (0.20). In addition, the binding force ofh-BN and ceramic phases are negatively correlated with their friction coefficients. The high binding force between the two phases contributes to theh-BN release efficiency and the "trapping" of abrasive debris, resulting in the continuous lubricating films and low friction coefficient. The highest binding force between Si3N4andh-BN, resulting in highh-BN release efficiency and better friction coefficient (0.21).