Study on self-adaptive lubrication mechanism of surface micro-dimple structure filled with multiple lubricants

JOURNAL OF ALLOYS AND COMPOUNDS

卷:861

Article

Liu, Xiyao^1,2  Lu, Zhiwei¹  Dong, Hao¹  Cao, Yan¹  Yang, Hairu³ 

[1] Xian Technol Univ, Sch Mechatron Engn, 2 Xuefuzhong Rd, Xian 710021, Peoples R China

[2] Henan Univ Sci & Technol, Natl United Engn Lab Adv Bearing Tribol, 236 Kaiyuan Ave, Luoyang 471000, Peoples R China

[3] Huanggang Normal Univ, Sch Mechatron & Automot Engn, 146 Xinganger Rd, Huanggang 438000, Peoples R China

关键词: Lubrication mechanism;    Micro-dimple;    Lubricant;   

DOI  :  10.1016/j.jallcom.2020.158479

来源: Elsevier

【 摘 要 】

In view of the high temperature and heavy load operating conditions of M50 aviation bearings, it is of great significance to explore how to improve its friction performance at high temperature or heavy load. The surface micro-dimple structure filled with multiple lubricants Sn-Ag-Cu/TiO2 is prepared by laser additive manufacturing in this paper. It is found that in high temperature environment, Sn-Ag-Cu/TiO2 in micro-dimples is removed to worn surfaces and are continuously pulverized, oxidized, agglomerated, deformed and compacted under the action of friction, finally forming the lubrication structure, which makes the tribological properties of M50 greatly improved at a wide load range. Under heavy load condition, the slip behavior and high load-bearing properties of TiO2 nanoparticles make M50 still maintain excellent anti-friction and wear resistance. The results can provide guidance for the research of self-adaptive lubrication behavior of materials. (C) 2020 Elsevier B.V. All rights reserved.

【 授权许可】

Free