Galvanically induced potentials to enable minimal tribochemical wear of stainless steel lubricated with sodium chloride and ionic liquid aqueous solution

Amann, Tobias; Gatti, Felix; Oberle, Natalie; Kailer, Andreas; Rühe, Jürgen

doi:10.1007/s40544-017-0198-y

Cited by 30 publications

(21 citation statements)

References 62 publications

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“…Their results indicated that these ILs exhibit good frictionreducing and anti-wear properties as lubricants for steel/steel contact, which is related to the formation of a physically adsorbed film on the metal surface during friction. Amann et al [93] also reported the use of ILs as anti-wear additives. Li et al [94] synthesized several ILs in situ with monovalent metal salts and ethylene glycol (EG) by tribochemical reactions and realized macroscale superlubricity for all ILs at silicon nitride (Si 3 N 4 ) interfaces.…”

Section: Molecular Lubrication 2311 Ionic Liquid Lubricationmentioning

confidence: 99%

A review of recent advances in tribology

et al. 2020

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The reach of tribology has expanded in diverse fields and tribology related research activities have seen immense growth during the last decade. This review takes stock of the recent advances in research pertaining to different aspects of tribology within the last 2 to 3 years. Different aspects of tribology that have been reviewed including lubrication, wear and surface engineering, biotribology, high temperature tribology, and computational tribology. This review attempts to highlight recent research and also presents future outlook pertaining to these aspects. It may however be noted that there are limitations of this review. One of the most important of these is that tribology being a highly multidisciplinary field, the research results are widely spread across various disciplines and there can be omissions because of this. Secondly, the topics dealt with in the field of tribology include only some of the salient topics (such as lubrication, wear, surface engineering, biotribology, high temperature tribology, and computational tribology) but there are many more aspects of tribology that have not been covered in this review. Despite these limitations it is hoped that such a review will bring the most recent salient research in focus and will be beneficial for the growing community of tribology researchers.

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Section: Molecular Lubrication 2311 Ionic Liquid Lubricationmentioning

confidence: 99%

A review of recent advances in tribology

et al. 2020

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“…However, its low viscosity and corrosive property make it unacceptable in most tribological applications. Therefore, studies have been performed to improve the lubricating performance of water-based lubricants [1][2][3]. A promising approach is to develop high-quality additives without environmentally harmful compositions.…”

Section: Introductionmentioning

confidence: 99%

Lubricating performances of graphene oxide and onion-like carbon as water-based lubricant additives for smooth and sand-blasted steel discs

Chen

Huang

2018

Friction

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Graphene oxide (GO) nanosheets and onion-like carbon (OLC) nanoparticles were synthesized from natural graphite powder and candle soot, respectively, and characterized by transmission electron microscopy and Raman spectroscopy. The lubricating performances of GO and OLC as lubricant additives in water were comparatively evaluated using a ball-on-disc tribometer. The effects of sand blasting of a steel disc on its morphology and tribological property were evaluated. The results show that the two nanomaterials, GO and OLC, when used as lubricant additives in water effectively reduce the friction and wear of the sliding discs, which is independent of the disc surface treatment. On applying heavy loads, it is observed that GO exhibits superior friction-reducing and anti-wear abilities compared to those of OLC-a trace amount of GO can achieve a lubricating ability equivalent to that of an abundant amount of OLC. Furthermore, it is observed that sand blasting cannot improve the wear resistance of the treated steel disc, even though the hardness of the disc increased after the treatment. The possible anti-wear and friction-reducing mechanisms of the GO and OLC as lubricant additives in water are discussed based on results for the wear surfaces obtained by scanning electron microscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy

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“…to 714 eV and around 724 eV prove that complex oxygen-containing iron compounds such as iron oxides, FeOOH, and Fe(OH) 3 [35,36] are generated and deposited on the steel surfaces. These oxygencontaining iron compounds have proven to be effective boundary lubricants [33−36].…”

Section: Resultsmentioning

confidence: 99%

Molecular behaviors in thin film lubrication—Part three: Superlubricity attained by polar and nonpolar molecules

Halmans

2018

Friction

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In thin-film lubrication (TFL), generally, the viscosity of the lubricant and its coefficient of friction (CoF) increase. Finding a method to reduce the CoF in TFL is a significant challenge for tribologists. In the present work, we report a robust superlubricity attained by using polyalkylene glycols (PAGs, polar molecules) and poly-α-olefins (PAOs, nonpolar molecules) as lubricants on steel/steel friction pairs that have been pre-treated by wearing-in with polyethylene glycol aqueous solution (PEG(aq)). A steady superlubricity state with a CoF of 0.0045 for PAG100 and 0.006 for PAO6 could be maintained for at least 1 h. Various affecting factors, including the sliding velocity, normal load, and viscosity of the lubricants, were investigated. Element analysis proved that composite tribochemical layers were deposited on the worn region after the treatment with PEG(aq). These layers were formed by the tribochemical reactions between PEG and steel and composed of various substances including oxides, iron oxides, FeOOH, and Fe(OH) 3 , which contributed to the superlubricity. In addition to the tribochemical layers, ordered layers and a fluid layer were formed by the PAGs and PAOs during the superlubricity periods. All the three types of layers contributed to the superlubricity, indicating that it was attained in the TFL regime. Accordingly, a mechanism was proposed for the superlubricity of the PAGs and PAOs in the TFL regime in this work. This study will increase the scientific understanding of the superlubricity in the TFL regime and reveal, in the future, the potential for designing superlubricity systems on steel surfaces for industrial applications.

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Galvanically induced potentials to enable minimal tribochemical wear of stainless steel lubricated with sodium chloride and ionic liquid aqueous solution

Cited by 30 publications

References 62 publications

A review of recent advances in tribology

A review of recent advances in tribology

Lubricating performances of graphene oxide and onion-like carbon as water-based lubricant additives for smooth and sand-blasted steel discs

Molecular behaviors in thin film lubrication—Part three: Superlubricity attained by polar and nonpolar molecules

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