Friction and Wear of Pd-Rich Amorphous Alloy (Pd43Cu27Ni10P20) with Ionic Liquid (IL) as Lubricant at High Temperatures

Lee, Jae-Ho; Yeo, Chang Dong; Hu, Zhonglue; Thalangamaarachchige, Vidura D.; Kaur, Jagdeep; Quitevis, Edward L.; Kumar, Golden; Koh, Yung P.; Simon, Sindee L.

doi:10.3390/met9111180

Cited by 5 publications

(6 citation statements)

References 26 publications

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“…As a result of these features and advantages, ILs are used in a wide range of applications such as catalyst [9][10][11][12][13][14], pre-treatment of biomass [15][16][17], absorbent [18][19][20], gas sensors [21], electrolyte [22][23][24], and membrane separation [25][26][27]. Among all of the applications, high-temperature utilization accounts for the vast majority, including high-temperature lubricants [28][29][30], solvents for high-temperature organic reactions [31], heat-transfer fluids [32,33], and thermal energy storage [34,35]. Although ILs are generally considered to be thermally stable, yet their stability is influenced seriously by a lot of factors.…”

Section: Introductionmentioning

confidence: 99%

Thermal Stability of Ionic Liquids: Current Status and Prospects for Future Development

Cheng

2021

Processes

101

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Ionic liquids (ILs) are the safest solvent in various high-temperature applications due to their non-flammable properties. In order to obtain their thermal stability properties, thermogravimetric analysis (TGA) is extensively used to analyze the kinetics of the thermal decomposition process. This review summarizes the different kinetics analysis methods and finds the isoconversional methods are superior to the Arrhenius methods in calculating the activation energy, and two tools—the compensation effect and master plots—are suggested for the calculation of the pre-exponential factor. With both parameters, the maximum operating temperature (MOT) can be calculated to predict the thermal stability in long-term runnings. The collection of thermal stability data of ILs with divergent cations and anions shows the structure of cations such as alkyl side chains, functional groups, and alkyl substituents will affect the thermal stability, but their influence is less than that of anions. To develop ILs with superior thermal stability, dicationic ILs (DILs) are recommended, and typically, [C4(MIM)2][NTf2]2 has a decomposition temperature as high as 468.1 °C. For the convenience of application, thermal stability on the decomposition temperature and thermal decomposition activation energy of 130 ILs are summarized at the end of this manuscript.

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Section: Introductionmentioning

confidence: 99%

Thermal Stability of Ionic Liquids: Current Status and Prospects for Future Development

Cheng

2021

Processes

101

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“…The properties of ILs have globally captured the attention, negligible vapor pressure, high solvating power, thermal and electrochemical stability, good conductivity, and recyclability. The application of ILs is extensive, ranging from refrigeration, lubricants to solvents [14][15][16]. ILs are proposed in several industrial applications, for example, metal dissolution, metal and organic extraction, electrolytes for batteries, water treatment, and environmental processes [17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Extraction of Cu(II), Fe(III), Zn(II), and Mn(II) from Aqueous Solutions with Ionic Liquid R4NCy

Castillo

Toro

Hernández

et al. 2021

Metals

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The leaching of copper ores produces a rich solution with metal interferences. In this context, Fe(III), Zn(II), and Mn(II) are three metals contained in industrial copper-rich solutions in high quantities and eventually can be co-extracted with the copper. The purpose of the current study was to determine the feasibly of solvent extraction with the use of ionic liquid methyltrioctyl/decylammonium bis (2,4,4-trimethylpentyl)phosphinate (R4NCy) as an extractant of Cu(II) in the presence of Fe(III), Zn(II), and Mn(II). In general terms, the results showed a high single extraction efficiency of all the metals under study. In the case of Fe(III) and Zn(II), the extraction was close to 100%. On the contrary, the stripping efficiency was poor to Fe(III) and discrete to Zn(II), but very high to Cu(II) and Mn(II). Finally, the findings of this study suggest that the ionic liquid R4NCy is feasible for the pre-treatment of the copper solvent extraction process to remove metal impurities such as Fe(III) and Zn(II).

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“…At the higher temperature of 100 °C, the value of COF (Figure b) was lower than the value of COF at room temperature (Figure a) due to the favorable tribofilm formed on the steel surfaces. − At boundary lubrication, the IL and MGO at the interface can make chemical reactions with the steel, forming a tribofilm on the surfaces that favorably reduces the friction, which is promoted at the higher temperature. In Figure b, the COF value decreased in the beginning of contact, which could be attributed to the run-in behavior of the contacting surfaces.…”

Section: Resultsmentioning

confidence: 96%

“…As GO and RGO have a low dispersion quality with the IL [C 7 C 1 im][NTf 2 ], MGO was used as its additive. The friction and wear of MGO/IL lubrication system was evaluated using a ball-on-flat linear reciprocating tribometer as shown in Figure 10 (see ref 62 for further details).…”

Section: Experimental Methods For Friction and Wear Measurementmentioning

confidence: 99%

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Modified Graphene Oxide as an Additive to Enhance the Lubricity of the Ionic Liquid, 1-Heptyl-3-methylimidazolium Bis[(trifluoromethane)sulfonyl]amide

Talukder

Kaur

Lawerence

et al. 2023

ACS Appl. Eng. Mater.

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Nanocarbon products and graphene derivatives are often applied to base lubricants as an additive to reduce contactinduced surface failures and improve the reliability of engineering applications. In this study, the effects of modified graphene oxide (MGO) on the lubricity of the ionic liquid (IL), 1-heptyl-3-methyl imidazolium bis[(trifluoromethane)sulfonyl]amide ([C 7 C 1 im][NTf 2 ]), are investigated through systematic experiments and material characterizations. To enhance the stability of the dispersion of GO in the IL [C 7 C 1 im][NTf 2 ] lubricant, 1-butyl-3-(9-carboxynonyl)imidazolium bromide (ILC 9 -COOH) is covalently grafted onto GO, which produces ILC 9 -COOH-modified graphene oxide (MGO). The synthesized MGO/IL lubricant is applied to the sliding contact between the stainless steel ball and the bearing steel plate. The measured friction and wear are analyzed with respect to the MGO concentration and temperature. The experimental results support that MGO is an effective additive to the IL [C 7 C 1 im][NTf 2 ] lubricant in decreasing the friction, and its benefit is more obvious at the higher temperature. From the analysis of the 3D surface profilometer and scanning electron microscopy (SEM) measurements, it is found that the abrasive type of wear is dominant on the worn surface. If the MGO concentration is appropriately controlled, MGO additive can be beneficial in decreasing the wear at the higher temperature.

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Friction and Wear of Pd-Rich Amorphous Alloy (Pd43Cu27Ni10P20) with Ionic Liquid (IL) as Lubricant at High Temperatures

Cited by 5 publications

References 26 publications

Thermal Stability of Ionic Liquids: Current Status and Prospects for Future Development

Thermal Stability of Ionic Liquids: Current Status and Prospects for Future Development

Extraction of Cu(II), Fe(III), Zn(II), and Mn(II) from Aqueous Solutions with Ionic Liquid R4NCy

Modified Graphene Oxide as an Additive to Enhance the Lubricity of the Ionic Liquid, 1-Heptyl-3-methylimidazolium Bis[(trifluoromethane)sulfonyl]amide

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