Tribological behavior of vegetable oil-based lubricants with nanoparticles of oxides in boundary lubrication conditions

Alves, Salete Martins; Barros, Bráulio Silva; Trajano, Marinalva Ferreira; Ribeiro, Kandice Suane Barros; Moura, Edja Iandeyara Freitas

doi:10.1016/j.triboint.2013.03.027

Cited by 360 publications

(191 citation statements)

References 23 publications

(29 reference statements)

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“…Bio-lubricant felt can be used as an alternative to replace lubricants from petroleum as it has suitable properties and can be renewed. Compared with a lubricant, bio-lubricant has a high degree of lubricity, high viscosity index, high flash point and low volatility [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

A Review of Bio-lubricant Production from Vegetable Oils Using Esterification Transesterification Process

Annisa

Widayat

2018

MATEC Web Conf.

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Abstract. Since long time ago, petroleum oil has been used as a lubricant in motor vehicles. But, the uses of lubricants petroleum can pollute the environment and disrupt marine ecosystems and terrestrial. On the other hand, the use of lubricants in the world in 2008 reached 46 million kiloliters/year and increased by 2% every year. The future prospect the uses of lubricant petroleum on the vehicle's engine is predicted to have a bad prospect. Thus began research to identify suitable materials to replace petroleum based lubricants. It can produce from vegetable oils and animals oils by chemical modification. But, bio-lubricant properties are easily damaged so we need more research to improve the shelf life of the bio-lubricant. The research must be done to improve the characteristics by adding a bio-lubricant additive.

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Section: Introductionmentioning

confidence: 99%

A Review of Bio-lubricant Production from Vegetable Oils Using Esterification Transesterification Process

Annisa

Widayat

2018

MATEC Web Conf.

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“…It is observed that the grooves are more intense on the surface of the ball with the largest concentrations of surfactant (5%). Probably these grooves may have been caused by hard particles, probably oxides, which increases the friction between the surfaces, promoting this wear 37 . Another important observation is that an increase in the oil concentration does not promote a significant WSD reduction.…”

Section: Evaluation Of the Tribological Performance Of Emulsionsmentioning

confidence: 99%

The Lubricity Analysis of Cutting Fluid Emulsions

et al. 2017

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The new generation of cutting fluids should have some characteristics, such as low toxicity and biodegradability. A bio-cutting fluid emulsion are an excellent option because they present those properties, as well as good mechanical performance. The present study aims to investigate the lubricity of O/W emulsions (cutting fluid emulsion), varying the concentration of anionic surfactant (1%, 2.5% and 5%) and epoxidized oil (5%, 10%, 15%, 20% e 25%). A sunflower oil was chemically modified by epoxidation reaction, then its viscosity, iodine and oxirane index, density, and acidity were characterized. The performances of the emulsions were evaluated using a tribometer HFRR (High Frequency Reciprocating Rig), under hydrodynamic lubrication conditions. The ball wear scars were analyzed using an optical microscopy. The results showed that a low concentration of surfactant promote friction and wear reduction. Based on the tribological performance, the emulsions with 5% and 10% of epoxidized oil are more suitable.

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“…Accordingly, the power increase in the synthesis provided more homogeneous particles due to the increased surface enrichment. Authors like [2], [8] obtained nanoparticles of CuO minimum size but with considerable agglomeration visible in the SEM images for metal oxides. According [7], synthetized CuO Ed.…”

Section: A) 10%w -80°cmentioning

confidence: 99%

“…However, the information about the tribological properties of nanofluids is still contradictory and in some cases the nanofluids show poorer behavior than the base fluid [2]. …”

Section: Introductionmentioning

confidence: 99%

Leverage about synthesis and dispersion with cuo nanoparticle in oil lubricating

Mello¹,

Guedes²,

Alves³

et al. 2016

ITEGAM- Journal of Engineering and Technology for Industrial Applications (ITEGAM-JETIA)

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The challenge for nanotechnology application in automotive lubrication is the difficulty in dispersing the nanoparticles in lubricating oils. Some factors have a direct influence on the dispersion of particles, such as size and shape, which are controlled by the chosen synthesis method. In addition, the use of covers and dispersant agents aid the dispersion of nanoparticles in lubricating oils. In this work studied the effect of different amount of energy given during the synthesis of nanoparticles in microwaves, in order to observe its influence on the dispersion size and shape of nanoparticles. They were covered with oleic acid, as well disperse in toluene, improving nanoparticle dispersion. The dispersion in of nanoparticles in oil was observed by physical characteristic, spectroscopy in the visible ultraviolet (UV/VIS) and micrographs (MO). The results showed that the synthesis with higher amount of energy generated a smaller particle size and better dispersion in oil. However the nanoparticle shape is not influenced by energy amount. The use of Oleic acid and toluene improved the dispersion of the nanoparticles in the lubricant oil as observed in the results of UV/ VIS by biggest interparticle distance.Keywords: Nanoparticles, synthesis energy, dispersion in oil.Alavancagem sobre a síntese e dispersão com nanopartículas de CuO em óleo lubrificante RESUMO O desafio para aplicação de nanotecnologia em lubrificação automóvel é a dificuldade em dispersar as nanopartículas em óleos lubrificantes. Alguns fatores têm uma influência direta sobre a dispersão de partículas, tais como tamanho e forma, que são controladas pelo método escolhido de síntese. Além disso, o uso de tampas e agentes dispersantes auxiliam na dispersão de nanopartículas em óleos lubrificantes. Neste trabalho foi estudado o efeito de diferentes quantidades de energia dada durante a síntese das nanopartículas em micro-ondas, a fim de observar a sua influência sobre o tamanho e a forma da dispersão de nanopartículas. Eles foram cobertas com ácido oleico, assim dispersar em tolueno, melhorando a dispersão de nanopartículas. A dispersão em de nanopartículas em óleo foi observada por característica física, espectroscopia no ultravioleta visível (UV/VIS) e micrografias (MO). Os resultados mostraram que a síntese de com maior quantidade de energia gerada uma dimensão de partícula mais pequena e melhor dispersão em óleo. No entanto, a forma de nanopartículas não é influenciada pela quantidade de energia. A utilização de ácido oleico e tolueno melhorou a dispersão das nanopartículas no óleo lubrificante como observado nos resultados de UV / VIS por maior distância interpartículas.Palavras-Chave: nanopartículas, síntese de energia, dispersão em óleo.

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Tribological behavior of vegetable oil-based lubricants with nanoparticles of oxides in boundary lubrication conditions

Cited by 360 publications

References 23 publications

A Review of Bio-lubricant Production from Vegetable Oils Using Esterification Transesterification Process

A Review of Bio-lubricant Production from Vegetable Oils Using Esterification Transesterification Process

The Lubricity Analysis of Cutting Fluid Emulsions

Leverage about synthesis and dispersion with cuo nanoparticle in oil lubricating

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