The Influences of Methyl Group at C2 Position in Imidazolium Ring on Tribological Properties

Zhang, Haobo; Xia, Yanqiu; Yao, Meiyi; Jia, Zhengfeng; Liu, Zhilu

doi:10.1007/s11249-009-9465-z

Cited by 43 publications

(28 citation statements)

References 29 publications

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“…Figure 10 gives the XPS spectra of the typical elements on the rubbed surface lubricated with the grease containing different solid additives. The broad O1s peak indicates that the worn surfaces have complex oxide species [11].The weak single of B1s peak at 192.6 eV (Fig. 10b) was assigned to B 3 O 5 [12].…”

Section: Sem and Xps Analysis Of The Worn Surfacementioning

confidence: 97%

Study the Sensitivity of Solid Lubricating Additives to Attapulgite Clay Base Grease

2011

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The focus of this study was the development of a new lubricating grease, using surface-modified attapulgite clay as thickener and synthetic oil (PAO 40) as the base oil. The tribological sensitivity of the new grease was investigated by studying the effect of adding three solid additives [KB 3 O 5 , MoS 2 , graphite and a graphite/MoS 2 mixture (mass ratio 3:2)]. Its tribological behavior was compared with that of traditional bentone grease by adding MoS 2 . The dropping point and the cone penetration of the new grease were also investigated and analyzed. The wear scar diameter of the base grease was measured on an MRS-1 J (G) four-ball tester, and the tribological sensitivity of solid lubricating additives to attapulgite clay base grease was evaluated using an Optimol SRV reciprocating friction and wear tester. The addition of MoS 2 and the graphite/ MoS 2 mixture to the new lubricating grease improved its friction-reducing ability, while the addition of KB 3 O 5 improved its antiwear ability. The additives MoS 2 and the graphite/MoS 2 mixture also increased the load-carrying capacity of the base grease. The attapulgite clay grease containing MoS 2 had a better friction-reducing ability than the traditional bentone grease containing MoS 2.

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Section: Sem and Xps Analysis Of The Worn Surfacementioning

confidence: 97%

Study the Sensitivity of Solid Lubricating Additives to Attapulgite Clay Base Grease

2011

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“…Numerous studies refer the better solubility of ILs in polar base oils such as ester [41][42][43], polyethylene glycol [44][45][46], or glycerol [47][48][49]. But corrosion is also an important issue in industry [50,51], being closely related to lubrication.…”

Section: Introductionmentioning

confidence: 99%

Corrosion activity and solubility in polar oils of three bis(trifluoromethylsulfonyl) imide/bis(trifluoromethylsulfonyl) amide ([NTF 2 ]) anion-based ionic liquids

Fernández-González

Mallada

Viesca

et al. 2017

Journal of Industrial and Engineering Chemistry

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The corrosion behaviour and solubility of three bis (trifluoromethylsulfonyl) , as a component in a mixture with different base oils were analysed. Six polar oils suitable for use in lubrication were utilized as base oil. Solubility tests were performed by using turbidimetry, and corrosion was checked at 4 v/v% by examining the roughness and chemical composition of the surface after 21 days. The results showed that long carbon chains in the cation improve the solubility greatly in diesters and slightly in polyolesters. Corrosion was not detected at this concentration.

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“…Jimenez and Bermudez studied the tribological properties of several ILs as additives in paraffinic-naftenic mineral base oil and synthetic esters and found that highly polar ILs could reduce both friction and wear with respect to the base oil [33][34][35]. Yao et al [36,37] synthesized and evaluated several imidazolium ILs as anti-wear additives in poly(ethylene glycol). Their results show that these could effectively reduce the friction and wear of sliding pairs compared with cases in which additives were not used.…”

Section: Introductionmentioning

confidence: 99%

Alkyl Imidazolium Ionic Liquids as Friction Reduction and Anti-Wear Additive in Polyurea Grease for Steel/Steel Contacts

et al. 2010

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Five room temperature ionic liquids (ILs), 1-butyl-3-methylimidazolium hexafluorophosphate (L-P 104), 1-hexyl-3-methylimidazolium hexafluorophosphate (L-P106), 1-octyl-3-methylimidazolium hexafluorophosphate (L-P108), 1-decyl-3-methylimidazolium hexafluorophosphate (L-P110), and 1-hexyl-3-methylimidazolium tetrafluoroborate (LB106) were studied as 1 wt% additives of polyurea grease for steel/steel contacts. Their tribological behaviors as additives of polyurea grease for steel/steel contacts were evaluated on an Optimol SRV-IV oscillating reciprocating friction and wear tester and an MRS-1J (G) four-ball tester at room and high temperatures. The friction test results showed that the ILs, as 1 wt% additives in polyurea grease for steel/steel contacts, had better friction reduction and anti-wear properties at high temperature than at room temperature, and ILs can significantly improve the friction reduction and anti-wear properties of polyurea grease compared with base grease containing 1 wt% of zinc dialkyldithiophosphate (T204). The excellent tribological properties are attributed to the formation of a surface protective film composed of FeF 2 , nitrides, and compound containing the P-O bonding on the lubricated metal surface by a tribochemical reaction. The ordered adsorbed films and good miscibility of ILs with the base grease also contributed to the excellent tribological properties. Wear mechanisms and worn steel surfaces were studied by a PHI-5702 multifunctional X-ray photoelectron spectrometer and a JSM-5600LV scanning electron microscope.

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The Influences of Methyl Group at C2 Position in Imidazolium Ring on Tribological Properties

Cited by 43 publications

References 29 publications

Study the Sensitivity of Solid Lubricating Additives to Attapulgite Clay Base Grease

Study the Sensitivity of Solid Lubricating Additives to Attapulgite Clay Base Grease

Corrosion activity and solubility in polar oils of three bis(trifluoromethylsulfonyl) imide/bis(trifluoromethylsulfonyl) amide ([NTF 2 ]) anion-based ionic liquids

Alkyl Imidazolium Ionic Liquids as Friction Reduction and Anti-Wear Additive in Polyurea Grease for Steel/Steel Contacts

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