Simulated aging of lubricant oils by chemometric treatment of infrared spectra: Potential antioxidant properties of sulfur structures

Amat, Sandrine; Braham, Zeineb; Dréau, Yveline Le; Kister, Jacky; Dupuy, Nathalie

doi:10.1016/j.talanta.2012.12.051

Cited by 22 publications

(15 citation statements)

References 20 publications

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“…Additives added to base oil stock may constitute up to 30% (v/v) of engine oil [7]. Additives such as antioxidants and detergents retard the oxidation effect of engine oil becoming acidic.…”

Section: Introductionmentioning

confidence: 99%

Absorption Wavebands for Discriminating Oxidation Time of Engine Oil as Detected by FT-IR Spectroscopy

et al. 2019

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Fourier Transform-Infrared (FT-IR) spectroscopy was used to analyze gasoline engine oil (SAE 5W20) samples that were exposed to seven different oxidation times (0 h, 24 h, 48 h, 72 h, 96 h, 120 h, and 144 h) to determine the best wavenumbers and wavenumber ranges for the discrimination of the oxidation times. The thermal oxidation process generated oil samples with varying total base number (TBN) levels. Each wavenumber (400–3900 cm−1) and wavenumber ranges identified from the literature and this study were statistically analyzed to determine which wavenumbers and wavenumber ranges could discriminate among all oxidation times. Linear regression was used with the best wavenumbers and wavenumber ranges to predict oxidation time.

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Section: Introductionmentioning

confidence: 99%

Absorption Wavebands for Discriminating Oxidation Time of Engine Oil as Detected by FT-IR Spectroscopy

et al. 2019

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“…The ageing stability of a lubricant is highly dependent on its chemical composition, the related additives and stabilising agents (Tuszynski et al , 2008). The latest researches (De Feo et al , 2015; Amat et al , 2013) in this area explored the ageing effect on lubricants through the surface analysis techniques to explain the tribochemistry involved within the tribological process. There is a wealth of literatures about the effect of ageing on the lubricants and the related tribological performance.…”

Section: Introductionmentioning

confidence: 99%

Effect of lubricant ageing on lubricants’ physical and chemical properties and tribological performance; Part I: effect of lubricant chemistry

Cen

Morina

Neville

2018

ILT

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Purpose Ageing has been known to affect the performance of lubricants. However, there is a lot of debate as to whether ageing is beneficial or detrimental to the wear performance of lubricants. Design/methodology/approach The purpose of this research is to evaluate the effect of ageing on the viscosity, total acid number and Fourier-transform infrared spectroscopy information of a series of lubricants. The tribological performance (friction and wear) of the aged lubricants is also studied, followed by X-ray photoelectron spectroscopy analysis on the selected post-test samples to study the tribochemical features of the tribofilm. Findings The results show that ageing has a different impact on lubricants and tribological performances based on the physical and chemical properties. Originality/value These findings will be compared with the research on the role of water in lubricant ageing (Part II of this study).

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“…Ageing of lubricants has been shown to significantly affect the performance of lubricants. De Feo et al (2015) and Amat et al (2013) explored the ageing effect on lubricants and tried to explain the tribochemistry involved within the tribological process. Offunne et al (1989) summarized that ageing of lubricants was affected by temperature, the rate of air circulation, metal and water content and the type of base oil and additives.…”

Section: Introductionmentioning

confidence: 99%

Effect of ageing on lubricants’ physical and chemical properties and tribological performance

Cen

Morina

Neville

2019

ILT

View full text Add to dashboard Cite

Purpose The purpose of this study is to evaluate the effect of water contamination on ageing of lubricants. Design/methodology/approach The viscosity, total acid number and Fourier transform infrared spectrum of a series of lubricants after ageing with water were studied. The tribological performance (friction and wear) of the aged lubricants was also analyzed, followed by X-ray photoelectron spectroscopy analysis on the selected post test samples to study the tribochemical features of the tribofilm. Findings The results were also compared with Part I of this study, and it was found that ageing has a different impact on lubricants and tribological performances based on the physical and chemical properties when water is present in the lubricants. Originality/value This paper is a continuation of Part I of this study and gives an understanding on the impact of water on the lubricants and related tribological and tribochemical performance.

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Simulated aging of lubricant oils by chemometric treatment of infrared spectra: Potential antioxidant properties of sulfur structures

Cited by 22 publications

References 20 publications

Absorption Wavebands for Discriminating Oxidation Time of Engine Oil as Detected by FT-IR Spectroscopy

Absorption Wavebands for Discriminating Oxidation Time of Engine Oil as Detected by FT-IR Spectroscopy

Effect of lubricant ageing on lubricants’ physical and chemical properties and tribological performance; Part I: effect of lubricant chemistry

Effect of ageing on lubricants’ physical and chemical properties and tribological performance

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