Sn-Al_(2)O_(3)固体润滑剂填充钨钢织构界面摩擦学性能  

Tribological Properties of Tungsten Steel Texture Interface Filled with Sn-Al_2O_(3) Solid Lubricant

作　　者：张鸿磊 陈阳 林海波 杨慷 ZHANG Honglei;CHEN Yang;LIN Haibo;YANG Kang(School of Mechanical Engineering,Sichuan University of Science&Engneering,Zigong Sichuan 643000,China;School of Mechanical Engineering,Anyang Institute of Technology,Anyang Henan 455000,China)

机构地区：[1]四川轻化工大学机械工程学院,四川自贡643000 [2]安阳工学院机械工程学院,河南安阳455000

出　　处：《润滑与密封》2023年第9期115-123,共9页Lubrication Engineering

基　　金：中国博士后科学基金项目(2019M662484);河南省科技厅科技攻关项目(212102210111);河南省青年教师重点培训项目(2021GGJS149)。

摘　　要：为提高钨钢材料零部件的减摩抗磨性能,参照鱼鳞表面结构并结合有限元模拟仿生设计槽宽约0.6 mm钨钢试样;制备具有最佳配比的Sn-Al_(2)O_(3)复合固体润滑剂,利用高温熔渗将其填充于仿生鱼鳞状表面织构以制备Sn-Al_(2)O_(3)复合固体润滑剂填充钨钢织构试样,并在不同载荷-滑动频率下研究试样的摩擦学性能。结果表明:相比30 N-2 Hz、25 N-3 Hz、15 N-5 Hz和10 N-6 Hz工况,在20 N-4 Hz工况下试样具有最低的平均摩擦因数和磨损率。这是因为在相对较低的载荷和相对较高的滑动频率下,循环应力和摩擦热使塑性变形状态的固体润滑剂更易从织构中挤出而迁移到摩擦表面,形成完整的润滑膜,能够有效地提高试样的减摩抗磨性能。To improve the friction reduction and wear resistance of tungsten steel components,a tungsten steel sample with a groove width of about 0.6 mm was designed based on the surface structure of fish scales and combined with finite element simulation and biomimetic design.The Sn-Al_2O_(3) composite solid lubricant with the best ratio was prepared,and was filled into the bionic fish scale surface texture(STS) by high-temperature infiltration to obtain the tungsten steel texture samples filled with Sn-Al_2O_(3) composite solid lubricant.The tribological properties of the samples under different load-sliding frequency was studied.The results show that compared to the operating conditions of 30 N-2 Hz,25 N-3 Hz,15 N-5 Hz,and 10 N-6 Hz,under the condition of 20 N-4 Hz,the sample has the lowest average friction coefficient and wear rate.This is because under relatively low loads and relatively high sliding frequencies,the cyclic stress and frictional heat make it easier for solid lubricants in the plastic deformation state to be extruded from the texture and migrated to the friction surface,forming a complete lubrication film,which can effectively improve the material's friction reduction and wear resistance performance of the samples.

关 键 词：钨钢 Sn-Al_(2)O_(3)固体润滑剂 表面织构 摩擦学行为 

分 类 号：TH117.1[机械工程—机械设计及理论]