Effect of Halogen-Free Ionic Liquids as Additives of Biolubricants for Room Temperature Titanium-Steel Contact

The surface interactions and tribological behavior of titanium-steel contact have been previously studied under the application of several commercial Ionic Liquids (ILs). In certain cases, superior anti-wear characteristics have been experienced when lubricating using ILs. This is often attributed to the development of a protective tribolayer that forms during application. One anion in particular amide, [Tf2N], has exhibited these characteristics with particularly positive results. However, amide is an anion that contains halogens, which are toxic and can cause harm if not handled properly. Due to the toxicity of most lubricants there has been a growing need to transition to bio-lubricants due to their low impact to the environment. This particular work will investigate the use of Trihexyltetradecylphosphonium, [P6,6,6,14]-+, cation with anion decanoate [Deca] as a non-toxic alternative to amide [Tf2N]. [P6,6,6,14]-+[Deca] and [P6,6,6,14]-+[Tf2N] will be compared as additives (1.0 and 2.5 wt. %) in Coffee Bean oil (CB) for lubrication of titanium-steel contact at room temperature. In this work, tests are conducted using a ball-on-flat reciprocating tribometer as per ASTM G133 with lubricated titanium-steel contact. An AISI 420C stainless steel ball is used on a Grade 5 6Al-4V titanium alloy disk specimen. Friction and wear volume are measured, examined, and discussed.

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Study of the effect of tribo-materials and surface finish on the lubricant performance of new halogen-free room temperature ionic liquids

Applied Surface Science ◽

10.1016/j.apsusc.2016.01.127 ◽

2016 ◽

Vol 366 ◽

pp. 464-474 ◽

Cited By ~ 25

Author(s):

N. Saurín ◽

I. Minami ◽

J. Sanes ◽

M.D. Bermúdez

Keyword(s):

Ionic Liquids ◽

Surface Finish ◽

Room Temperature ◽

Room Temperature Ionic Liquids ◽

Halogen Free ◽

Lubricant Performance

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Tribochemistry and thermo-oxidative stability of halogen-free ionic liquids

RSC Advances ◽

10.1039/c7ra09163j ◽

2017 ◽

Vol 7 (77) ◽

pp. 48766-48776 ◽

Cited By ~ 6

Author(s):

Vladimir Totolin ◽

Lucia Pisarova ◽

Nicole Dörr ◽

Ichiro Minami

Keyword(s):

Ionic Liquid ◽

Ionic Liquids ◽

Oxidative Stability ◽

Room Temperature ◽

Room Temperature Ionic Liquid ◽

Iron Phosphates ◽

Halogen Free ◽

First Time

The formation of binary iron phosphates/phosphides based tribofilms from a phosphonium phosphate room-temperature ionic liquid has been reported for the first time.

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Synthetic and Organic Supercharger Lubrication: The Tribological Performance of Ionic Liquids as Additives to Lubricants

Volume 14: Emerging Technologies; Materials: Genetics to Structures; Safety Engineering and Risk Analysis ◽

10.1115/imece2016-66073 ◽

2016 ◽

Author(s):

Derek Bain ◽

Dana Fisk ◽

Camila Gomez Serrano ◽

Samantha Orlando ◽

Patricia Iglesias

Keyword(s):

Ionic Liquids ◽

Friction Coefficient ◽

Engine Oil ◽

Wear Volume ◽

Coffee Bean ◽

Base Oil ◽

Low Viscosity ◽

High Thermal Resistance ◽

Steel Balls ◽

Pin On Disk

A supercharger is a mechanical device that can be added to an engine of a car to increase engine power. It works by sucking air in at atmospheric pressure into the rotors and compressing it at high revolutions per minute. With the rotors spinning at high speeds, the supercharger gears are exposed to high values of friction and wear, which results in a reduction of their service life. Ionic liquids (ILs) are substances that possess unique lubricating abilities when added to base oil or when used as neat lubricants. Properties include low volatility, non-flammability, as well high thermal resistance. These liquids are able to form ordered layers and tribofilms on the contacting surfaces which further protects the surface materials. In this work, the effect of adding ILs to low viscosity synthetic oil used to lubricate gears and to organic oil was investigated in the reduction of friction and overall wear of superchargers. Mobil 1 5W-30 Full Synthetic Engine Oil (MS) was used as a control and compared to coffee bean oil (CB). Additionally, the performance of these oils was observed with ionic liquids as additives at 1 wt. %. The chosen IL consisted of the cation Trihexyltetradecylphosphonium, [P6,6,6,14]+, with the anion Bis(trifluoromethylsulfonyl) amide, [NTf2]−. Lubricated flat disks of AISI 52100 stainless steel and 420C steel balls were studied using a Pin-on-Disk configuration. A total sliding distance of 500 meters was tested with a wear track diameter of 20 mm. Wear volume and average friction coefficient were measured according to ASTM-G99. Results showed that the addition of the ILs to the CB and MS reduced friction coefficient of the steel disks at medium speeds, and wear values achieved were comparable to the friction observed. The wear width values were also found to be reduced at medium speeds.

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Development of the room temperature protocol based on room temperature ionic liquids and surfactant ionic liquids for the synthesis of derivatives of 2-amino-thiazoles and thermo-physical analysis of the synthesized derivatives using TGA-DSC.

Current Physical Chemistry ◽

10.2174/1877946810999200519102040 ◽

2020 ◽

Vol 10 ◽

Cited By ~ 1

Author(s):

Chandrakant Sarode ◽

Sachin Yeole ◽

Ganesh Chaudhari ◽

Govinda Waghulde ◽

Gaurav Gupta

Keyword(s):

Thermal Analysis ◽

Heat Capacity ◽

Ionic Liquids ◽

Specific Heat ◽

Specific Heat Capacity ◽

Room Temperature ◽

Heat Capacity Data ◽

General Strategy ◽

Capacity Data ◽

Derivatives Of

Aims: To develop an efficient protocol, which involves an elegant exploration of the catalytic potential of both the room temperature and surfactant ionic liquids towards the synthesis of biologically important derivatives of 2-aminothiazole. Objective: Specific heat capacity data as a function of temperature for the synthesized 2- aminothiazole derivatives has been advanced by exploring their thermal profiles. Method: The thermal gravimetry analysis and differential scanning calorimetry techniques are used systematically. Results: The present strategy could prove to be a useful general strategy for researchers working in the field of surfactants and surfactant based ionic liquids towards their exploration in organic synthesis. In addition to that, effect of electronic parameters on the melting temperature of the corresponding 2-aminothiazole has been demonstrated with the help of thermal analysis. Specific heat capacity data as a function of temperature for the synthesized 2-aminothiazole derivatives has also been reported. Conclusion: Melting behavior of the synthesized 2-aminothiazole derivatives is to be described on the basis of electronic effects with the help of thermal analysis. Additionally, the specific heat capacity data can be helpful to the chemists, those are engaged in chemical modelling as well as docking studies. Furthermore, the data also helps to determine valuable thermodynamic parameters such as entropy and enthalpy.

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