Vegetable‐based biodegradable lubricating oil additives

Maleque, Md. Abdul; Masjuki, H.H.; Sapuan, S. M.

doi:10.1108/00368790310470976

Cited by 129 publications

(80 citation statements)

References 17 publications

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“…9 One of the drawbacks of coconut oil when used as a lubricant is that the wear rate in sliding in its presence is higher compared to that of mineral oil based lubricants. 10 Coconut oil has very high pour point because of the predominantly saturated nature of its fatty acid constituents precluding its use as base oil for lubricants in temperate and cold climatic conditions. 11 Vegetable lubricants generally show good lubricating properties under boundary lubrication mode.…”

Section: Introductionmentioning

confidence: 99%

Experimental evaluation on the tribological properties of coconut oil by the addition of CuO nanoparticles

Thottackkad

Perikinalil

Kumarapillai

2012

Int. J. Precis. Eng. Manuf.

155

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Considering the environmental problems created by mineral based lubricants, exploring the possibility of the use of vegetable base oils as automobile lubricants has been a growing worldwide trend. In the present study, analysis of coconut oil as a lubricant has been carried out in the perspective of its tribological behaviour using a pin-on-disc tribometer. Copper oxide nanoparticles are added to the oil on weight-percentage basis, the variation of its friction-reduction and antiwear properties are analysed. At an optimum concentration of nanoparticles, the coefficient of friction and the specific wear rate are found to be the lowest. Viscosity of oil is also seen to increase by an increase of concentration of nanoparticles. Flash-point remains constant while the fire-point increases as the nanoparticle concentration is increased. From dispersion analysis it is seen that the nano oil is not suitable enough for long stationary applications. Surface structure of the worn surfaces obtained by Atomic Force Microscopy (AFM) and Scanning Electron Microscopy (SEM) shows that the optimum concentration of nanoparticles in this lubricant causes the roughness of the worn pin surface to reduce to a low value after sliding. Wear scar obtained in the presence of nano oil is smoother compared to that with bare coconut oil. When the level of nanoparticles increases above the optimum level, friction coefficient and wear rate are seen to increase.

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Section: Introductionmentioning

confidence: 99%

Experimental evaluation on the tribological properties of coconut oil by the addition of CuO nanoparticles

Thottackkad

Perikinalil

Kumarapillai

2012

Int. J. Precis. Eng. Manuf.

155

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“…In this context, the selected lube is expected to satisfy the basic requirements under two broad areas, namely, tribological behaviour and stability. The triglyceride structure of a vegetable oil provides these desirable qualities due to their long and polar fatty acid chains [7,8]. It also generates high-strength lubricant films that interact strongly with metallic surfaces, reducing both friction and wear [9].…”

Section: Introductionmentioning

confidence: 99%

Tribological Studies on AISI 1040 with Raw and Modified Versions of Pongam and Jatropha Vegetable Oils as Lubricants

Shashidhara¹,

Jayaram²

2012

Advances in Tribology

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The friction and wear tests on AISI 1040 are carried out under raw, modified versions of two nonedible vegetable oils Pongam (Pongamia pinnata) and Jatropha (Jatropha curcas) and also commercially available mineral oil using a pin-on-disc tribometer for various sliding distances and loads. A significant drop in friction and wear for AISI 1040 is observed under Pongam and Jatropha raw oil compared to mineral oil, for the complete tested sliding distance and load, increasing the potential of vegetable oil for tribological applications. Stribeck curves are also drawn to understand the regimes of lubrication. Both the vegetable oils showed a clear reduction in the boundary lubrication regimes, leading to an early start of full film lubrication.

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“…Coconut oil shows good lubricant properties such as high viscosity index, good lubricity, high flash point and low evaporative loss. One of the drawbacks of coconut oil when used as a lubricant is that the wear rate in sliding in its presence is higher compared to that of mineral oil based lubricants [7]. Coconut oil has very high pour point because of the predominantly saturated nature of its fatty acid constituents precluding its use as base oil for lubricants in temperate and cold climatic conditions [8].…”

Section: Introductionmentioning

confidence: 99%

Experimental Evaluation of the Tribological Properties of CuO Nano-Lubricants at Elevated Temperatures

Koshy

Rajendrakumar

Thottackkad

2013

Lecture Notes in Mechanical Engineering

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Tribofilms formed from Copper oxide (CuO) nanoparticles in the nano-lubricant under boundary/thin film lubrication conditions have been studied. The tribological performance is linked to the tribofilm properties and consequently to the lubricating conditions. In the present study, analysis of mineral oil (paraffin oil) and vegetable oils (coconut oil and mustard oil) as a nano-lubricant has been carried out in the perspective of its tribological behaviour using a pin-on-disc tribometer. Small quantities of CuO nanoparticles are added to the base lubricating oil and ultrasonic shaking is carried out on the mixture, to formulate the corresponding nano-lubricant. The variation of its friction-reduction and anti-wear properties have been analysed at ambient and elevated temperatures. Viscosity, flash-point and fire-point of the base lubricants and the nano-lubricants have been measured. From the dispersion analysis it is seen that the nano-lubricant is not suitable enough for long stationary applications. Surface structure of the worn surfaces obtained by Atomic Force Microscope (AFM) and Scanning Electron Microscope (SEM) shows that the average roughness value decreases drastically when nano-lubricants are used rather than the base lubricants. With the current interest in lubricants from renewable sources, studies on vegetable oil based nanolubricants and means of predicting their performance are given predominance in this work.

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Vegetable‐based biodegradable lubricating oil additives

Cited by 129 publications

References 17 publications

Experimental evaluation on the tribological properties of coconut oil by the addition of CuO nanoparticles

Experimental evaluation on the tribological properties of coconut oil by the addition of CuO nanoparticles

Tribological Studies on AISI 1040 with Raw and Modified Versions of Pongam and Jatropha Vegetable Oils as Lubricants

Experimental Evaluation of the Tribological Properties of CuO Nano-Lubricants at Elevated Temperatures

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