Tribological characteristics of some environmentally friendly lubricants

Havet, L; Blouet, J.; Valloire, F Robbe; Brasseur, E; Slomka, D

doi:10.1016/s0043-1648(00)00550-0

Cited by 91 publications

(45 citation statements)

References 3 publications

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“…The triacylglycerol structure of plant oil derivatives makes it an excellent bio-lubricant [11][12][13]. They offer a number of advantages, including high biodegradability (>95 %), reduced environmental pollution [14][15][16][17][18] compatibility with additives, low production costs [19], large possibilities of production, low toxicity, high flash point, low volatility, high viscosity indices and, above all, better tribological performance. They have displayed superior performance than mineral oils in terms of anti-wear and fatigue resistance [20][21][22].…”

Section: Researchmentioning

confidence: 99%

Eco-friendly Multifunction Petroleum Additives: Preparation, Characterization and Evaluation

Abo-Hatab¹,

Kandile²,

Salah³

2018

Tribol. Ind.

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Section: Researchmentioning

confidence: 99%

Eco-friendly Multifunction Petroleum Additives: Preparation, Characterization and Evaluation

Abo-Hatab¹,

Kandile²,

Salah³

2018

Tribol. Ind.

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“…Several authors report [34][35][36] that biodiesel that contains high fraction of oxygen (O) and increased number of ester groups can reduce the wear and friction between contact surfaces given the presence of aliphatic fatty acid. This fatty acid enhances lubrication property by developing lubricating soap films.…”

Section: Sliding Wear Tests: Friction Coefficient In Biodieselmentioning

confidence: 99%

“…This fatty acid enhances lubrication property by developing lubricating soap films. Havet et al [36] report that the length of the fatty acid chain thickens the film and thereby increases the area of the protected surface.…”

Section: Sliding Wear Tests: Friction Coefficient In Biodieselmentioning

confidence: 99%

Tribological Performance of Si-Doped Hydrogenated Diamond-Like Carbon Coatings in Different Biodiesel

Dorner-Reisel

Kavaklioglu

Svoboda

et al. 2016

Journal of Applied Chemistry

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In this paper, two kinds of different biodiesel were tested in terms of their impact on wear resistance of Si-DLC coated 100Cr6 flat worn by an oscillating 100Cr6 ball. The knowledge about the tribological behaviour of different types of biodiesel is rare. Rape and soybean are two of the most common natural sources for biodiesel production. Also, if the quality of biodiesel seems to be similar and, according to the demands, biodiesel from different natural origin could affect changes in the tribological behaviour. Although, soybean methyl ester (SME) gives the best results at room temperature wear tests, 150 ∘ C SME reaches wear rates of Si-DLC flat against 100Cr6 ball almost double as high as rapeseed methyl ester (RME). It is evident that, with increasing fraction of oxidation stabilizer C 23 H 32 O 2 , the wear rate increases. For silicon doped hydrogenated diamond-like carbon is especially suitable, for use in biodiesels, where certain fraction of humidity, dissociated water, or polar functional groups may present.

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“…Vegetable oils [1,2] offer a number of advantages, including their high biodegradability (over 95%) [3], reduced environmental pollution, compatibility with additives, low production costs [4,5], large ş ş ş possibilities of production [6], low toxicity, high flash points, low volatility, and high viscosity indices. Among their disadvantages [7][8][9] are their relatively high pour points [10] and their low thermaloxidative stability [11].…”

Section: Introductionmentioning

confidence: 99%

Mixtures of vegetable oils and di-2-ethylhexyl-sebacate as lubricants

Puscas

Bandur

Modra

et al. 2006

J. Synthetic Lubrication

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Lubricants based on vegetable oils are growing in popularity in various applications. Environmentally friendly, vegetable oils and their derivatives constitute alternatives to mineral-based lubricants. Soybean oil, sunflower oil and rapeseed oil have better viscosity indices than mineral oils and even some synthetic oils, are biodegradable and have low production costs. However, vegetable oils have disadvantages, such as poor thermo-oxidative stability due to the carbon-carbon double bonds and poor low-temperature properties, which limit their use as lubricant base stocks. This study describes new base-stock oils obtained from mixture of vegetable oils and di-2-ethylhexyl-sebacate synthetic oil, which become lubricants when additives are introduced. These mixtures offer a large range of kinematic viscosities, while their pour points are under −33°C and their flash points over 240°C. The copper strip corrosion test result is 1a. The diameters of wear scars measured under four-ball testing (40 dyn) are less than 1 mm. A differential scanning calorimetry study and a thermo-gravimetric study under a nitrogen atmosphere for the mixed oils are reported. In the former study two-endothermic processes were observed between −15°C and −50°C. In the thermo-gravimetric analysis curve the weight loss is specific for each vegetable and synthetic oil component. From these studies a higher thermal stability was observed for vegetable oils than for ester oils, and it was concluded that the mixtures of vegetable and synthetic oils of diester type are physically homogeneous mixtures. The low production cost of lubricants based on vegetable oils makes them attractive alternatives for mineral oil based lubricants. Overall the mixtures of vegetable and ester oils can be competitive base oils for environmentally friendly lubricants.

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Tribological characteristics of some environmentally friendly lubricants

Cited by 91 publications

References 3 publications

Eco-friendly Multifunction Petroleum Additives: Preparation, Characterization and Evaluation

Eco-friendly Multifunction Petroleum Additives: Preparation, Characterization and Evaluation

Tribological Performance of Si-Doped Hydrogenated Diamond-Like Carbon Coatings in Different Biodiesel

Mixtures of vegetable oils and di-2-ethylhexyl-sebacate as lubricants

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