Additive influence on wear and friction performance of environmentally adapted lubricants

Waara, Patric; Hannu, Jesper; Norrby, Thomas; Byheden, Åke

doi:10.1016/s0301-679x(01)00045-7

Cited by 64 publications

(31 citation statements)

References 15 publications

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“…In these cases, the additive could not interact with the metallic surface to form the lubricating film, and also decreased the adsorption of the oil on the metal surface. This behavior can be explained by the chemical nature and the polarity of the vegetable oils in natura and the epoxidized oils since, even in the absence of additives, these oils were adsorbed by the metal surface, forming a thin layer that prevented metal-metal contact, resulting in the reduction of wear and friction (Van der Waal, 1985;Larsson et al, 2000;Waara et al, 2001;Alves et al, 2013). Fig.…”

Section: Tribological Behaviormentioning

confidence: 99%

New hydraulic biolubricants based on passion fruit and moringa oils and their epoxy

Silva

Foletto

Alves

et al. 2015

Industrial Crops and Products

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Section: Tribological Behaviormentioning

confidence: 99%

New hydraulic biolubricants based on passion fruit and moringa oils and their epoxy

Silva

Foletto

Alves

et al. 2015

Industrial Crops and Products

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“…The primary function of lubricating agents as engineering materials is to enhance equipment efficiency, reduce frictional loss, and extend the service life of machines [1][2][3]. However, since mechanical equipments are used in various fields, they present some special demands apart from excellent friction reducing and anti-wear properties.…”

Section: Introductionmentioning

confidence: 99%

Nano-montmorillonite-doped lubricating grease exhibiting excellent insulating and tribological properties

Cao

Xia

2017

Friction

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Three types of nano-montmorillonite were doped as additives to afford lubricating greases. The physicochemical, insulating, and tribological performances of the obtained lubricating greases were investigated in detail. Furthermore, the tribological action mechanisms were analyzed by high magnification optical microscope, Raman spectroscopy, and energy dispersive X-ray spectroscope (EDS). The results show that the inorganic modification montmorillonite (IOMMT) can significantly increase the number of electron traps in the base grease, leading to excellent insulating performances. Moreover, IOMMT as a novel lubricant additive (1.5 wt% in grease) significantly enhances the friction reducing and anti-wear abilities for steel/steel contact that comprises a unique layered structure to prevent friction between the contact pairs and the protective tribofilm generated by physical adsorption and chemical reaction.

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“…Reported results to date, dealing with the effect of base stock chemistry on the performance of EP additive, are rather contradictory. Waara et al [19] reported data showing that the performance of EP additives in ester-based fluids was different from that in mineral oils. Perez et al [20], relying on 4-ball anti-wear (AW) tests, reported very positive vegetable base stock effects on the performance of mostly phosphoric acid-based EP additives.…”

Section: Introductionmentioning

confidence: 99%

Effects of Chlorinated Paraffin and ZDDP Concentrations on Boundary Lubrication Properties of Mineral and Soybean Oils

Asadauskas¹,

Biresaw

McClure

2009

Tribol Lett

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Concentration effects of chlorinated paraffin and zinc di-ethylhexyl dithio phosphate on boundary lubrication properties were tested in vegetable and mineral base stocks. Solvent refined low sulfur paraffinic mineral oil (150 N oil) and conventional food grade soybean oil (soy oil) with EP additive concentration of 0-20% (w/w) were used in ASTM D2783 four-ball extreme pressure (4-ball EP) and Twist Compression Tribotests (TCT). Weld points in 4-ball EP and times to failure in TCT at 200 MPa showed that 150 N oil needed more than double treat levels of EP additives to achieve similar boundary lubrication performance as their 5% blends in soy oil. Also, incorporation of 20% soy oil into 150 N oil-based EP additive blends improved the performance to nearly the same level as soy oil only blends of corresponding additives. Boundary lubricity of some soy oil samples was similar to that of a commercial straight oil chlorinated metal forming lubricant. Several suggestions are provided to explain such pronounced influence of the base stock type on EP additive response. The findings suggest that soy oil and other farm-based oils may provide strategies for formulating cost effective industrial fluids and other lubricants.

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Additive influence on wear and friction performance of environmentally adapted lubricants

Cited by 64 publications

References 15 publications

New hydraulic biolubricants based on passion fruit and moringa oils and their epoxy

New hydraulic biolubricants based on passion fruit and moringa oils and their epoxy

Nano-montmorillonite-doped lubricating grease exhibiting excellent insulating and tribological properties

Effects of Chlorinated Paraffin and ZDDP Concentrations on Boundary Lubrication Properties of Mineral and Soybean Oils

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