摘要
该文采用有限元模拟分析方法并结合球-盘式摩擦磨损试验,以钨钢(TS)材料为研究对象,制备复合固体润滑剂Sn-Al_(2)O_(3)填充的鱼鳞状摩擦表面织构(STS),研究织构宽度与深度为0.6 mm时,表面织构角度参数(30°、45°、60°、75°与90°)对Sn-Al_(2)O_(3)/STS摩擦学性能的影响。模拟与试验结果表明,与TS相比,不同表面织构的Sn-Al_(2)O_(3)/STS的平均摩擦系数和磨损率均有所降低,且总体上随着织构角度的增大降幅也不断增大。在20 N、4 Hz的工况下,随着织构角度增加,织构边缘材料的变形程度也相应上升,导致固体润滑剂Sn-Al_(2)O_(3)逐渐从织构中挤出并迁移到摩擦表面,降低摩擦系数和磨损率。Sn-Al_(2)O_(3)/STS-90°织构边缘材料在应力的作用下变形较为严重,导致大量固体润滑剂Sn-Al_(2)O_(3)从织构中挤出并快速迁移到摩擦表面铺展形成润滑膜,提供出色的润滑作用,使得Sn-Al_(2)O_(3)/STS-90°织构边缘材料拥有最好的摩擦学性能,表现出最低的平均摩擦系数(0.13)和磨损率(1.21×10-13 m3N-1m-1),与TS相比分别降低约73.5%和85.5%。
In this paper,the fish-scale friction surface texture system(STS)filled with composite solid lubricant Sn-Al_(2)O_(3)was prepared by finite element simulation analysis method combined with ball-disc friction and wear test of tungsten steel(TS).The effects of surface texture angle parameters(30°,45°,60°,75°and 90°)on the tribological properties of Sn-Al_(2)O_(3)/STS were studied when the width and depth of texture are both 0.6 mm.The simulation and experimental results show that the average friction coefficient and wear rate of Sn-Al_(2)O_(3)/STS with different surface textures are lower than those of TS,and the decrease increases with the increase of texture angle.In the condition of 20 N-4 Hz,the deformation degree of the texture edge material increases with the increase of the texture angle,which leads to the solid lubricant Sn-Al_(2)O_(3)gradually extruding from the texture and migrating to the friction surface,reducing the friction coefficient and wear rate.The Sn-Al_(2)O_(3)/STS-90°texture edge material deforms seriously under the action of stress,which causes a large number of solid lubricant Sn-Al_(2)O_(3)to extrude from the texture and quickly migrate to the friction surface to form a lubricating film,which provides excellent lubrication,so that the Sn-Al_(2)O_(3)/STS-90°texture edge material has the best tribological properties.This shows the lowest average friction coefficient(0.13)and wear rate(1.21×10-13 m3N-1m-1),which are reduced by about 73.5%and 85.5%respectively,compared with TS.
出处
《科技创新与应用》
2023年第7期54-58,共5页
Technology Innovation and Application
基金
中国博士后科学基金(2019M662484)
河南省科技厅科技攻关项目(212102210111,212102210445)
河南省青年教师重点培养项目(2021GGJS149)。
