Tribological Performance and Lubrication Mechanism of Contact-Charged Electrostatic Spray Lubrication Technique

Trihexyltetradecylphosphonium bis(2-ethylhexyl)phosphate (phosphonium phosphate) ionic liquid is soluble in non-polar lubricants. It has been proposed as an effective anti-wear additive comparable to zinc dialkyldithiophosphate. Previously, phosphonium phosphate has shown a better anti-wear performance under some conditions such as high temperature. In this work, the tribological performance and the lubrication mechanism of phosphonium phosphate are compared with that of zinc dialkyldithiophosphate when lubricating silicon under various tribological conditions. This can lead to an understanding of the reasons behind the superior anti-wear performance of phosphonium phosphate under some conditions. A micro-scale study is conducted using a nanotribometer. The results show that both additives lead to a considerable reduction in both friction and wear coefficients. The reduction in the wear coefficient is mainly controlled by the formation of the tribofilm on the rubbing surfaces. Zinc dialkyldithiophosphate can create a thicker tribofilm, which results in a better anti-wear performance. However, the formation of a thicker film will lead to a faster depletion and thus phosphonium phosphate can provide better anti-wear performance when the depletion of zinc dialkyldithiophosphate starts.

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Tribological Performance and Lubrication Mechanism of Solid–Liquid Lubricating Materials in High-Vacuum and Irradiation Environments

Tribology Letters ◽

10.1007/s11249-015-0532-3 ◽

2015 ◽

Vol 59 (1) ◽

Cited By ~ 9

Author(s):

Mei Lv ◽

Lijun Yang ◽

Qihua Wang ◽

Tingmei Wang ◽

Yongmin Liang

Keyword(s):

High Vacuum ◽

Tribological Performance ◽

Lubrication Mechanism ◽

Solid Liquid

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A Study on the Tribological Performance of Nanolubricants

Processes ◽

10.3390/pr8111372 ◽

2020 ◽

Vol 8 (11) ◽

pp. 1372

Author(s):

Yeoh Jun Jie Jason ◽

Heoy Geok How ◽

Yew Heng Teoh ◽

Hun Guan Chuah

Keyword(s):

Wear Resistance ◽

Potential Application ◽

Environmentally Friendly ◽

Tribological Performance ◽

Lubricant Additives ◽

Lubrication Mechanism ◽

Base Oil ◽

Base Oils ◽

Dispersion Of Nanoparticles

In recent years, the tribology field has expanded with the advent of nanolubrication. Nanolubricants are the name given to the dispersion of nanoparticles in a base oil, and has attracted researchers due to its potential application. In addition to being used in the tribology field, nanoparticles are also used for medical, space, and composites purposes. The addition of nanoparticles in base oils is promising because it enhances specific tribological characteristics including wear-resistance and friction, and the most important reason is that the majority of them are environmentally friendly. This paper reviews the tribological effect of various nanoparticles as lubricant additives. Parameters of nanoparticles that affect tribological performance, the technique to enhance stability, and lubrication mechanism that is currently believed to function will be delineated in detail. Moreover, this review facilitates an understanding of the role of various nanoparticles, which helps in developing and designing suitable nanolubricants for various applications.

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Tribological Performance and Lubrication Mechanism of Alumina Nanoparticle Water-Based Suspensions in Ball-on-Three-Plate Testing

Tribology Letters ◽

10.1007/s11249-017-0823-y ◽

2017 ◽

Vol 65 (2) ◽

Cited By ~ 24

Author(s):

Anshun He ◽

Shuiquan Huang ◽

Jung-Ho Yun ◽

Hui Wu ◽

Zhengyi Jiang ◽

...

Keyword(s):

Tribological Performance ◽

Lubrication Mechanism ◽

Alumina Nanoparticle ◽

Water Based

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Tribological Performance and Lubrication Mechanism of Carbon Microspheres as Oil-based Lubricant Additive on Aluminum Alloy Substrate

Journal of Inorganic Materials ◽

10.15541/jim20160459 ◽

2017 ◽

Vol 32 (6) ◽

pp. 625 ◽

Cited By ~ 2

Author(s):

GU Yu-Kang ◽

CAO Lei ◽

WAN Yong ◽

GAO Jian-Guo

Keyword(s):

Aluminum Alloy ◽

Lubricant Additive ◽

Tribological Performance ◽

Carbon Microspheres ◽

Lubrication Mechanism ◽

Alloy Substrate

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Tribological Performance and Lubrication Mechanism of Alkylimidazolium Dialkyl Phosphates Ionic Liquids as Lubricants for Si3N4-Ti3SiC2Contacts

Journal of Nanomaterials ◽

10.1155/2014/548658 ◽

2014 ◽

Vol 2014 ◽

pp. 1-8 ◽

Cited By ~ 5

Author(s):

Hai-zhong Wang ◽

Dan Qiao ◽

Song-wei Zhang ◽

Da-peng Feng ◽

Jin-jun Lu

Keyword(s):

Ionic Liquids ◽

Friction And Wear ◽

Room Temperature ◽

Tribological Performance ◽

Load Carrying Capacity ◽

Lubrication Mechanism ◽

Experimental Conditions ◽

Comparison Results ◽

Protective Films ◽

Load Carrying

The tribological performance of Si3N4-Ti3SiC2contacts lubricated by alkylimidazolium dialkyl phosphates ionic liquids (ILs) was investigated using an Optimol SRV-IV oscillating reciprocating friction and wear tester at room temperature (25°C) and 100°C. Glycerol and tributyl phosphate (TBP) were also selected as lubricants for Si3N4-Ti3SiC2contacts to study the tribological properties under the same experimental conditions for comparison. Results show that the alkylimidazolium dialkyl phosphates ILs were effective in reducing the friction and wear for Si3N4-Ti3SiC2contacts, and their performance is superior to that of glycerol and TBP. The SEM/EDS and XPS results reveal that the excellent tribological endurance of alkylimidazolium dialkyl phosphates ILs is mainly attributed to the high load-carrying capacity of the ILs and the formation of surface protective films consisting of TiO2, SiOx, titanium phosphate, amines, and nitrogen oxides by the tribochemical reactions.

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