Towards Green Lubrication in Machining

Hsien, Willey Liew Yun

doi:10.1007/978-981-287-266-1

Cited by 20 publications

(6 citation statements)

References 74 publications

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“…Another major challenge is the cost of the bio-lubricants. Bio-lubricant costs somewhere between 30-40% more compared to a conventional lubricant [45]. Lubricant formulations for more environmentally benign applications are, therefore, being developed based on their benefits and limitations.…”

Section: High Cost Food Versus Lubricant Competitionmentioning

confidence: 99%

Vegetable Oil Based Lubricants: Challenges and Prospects

et al. 2019

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Lubricants are very important consumables in all industries as failure in machine parts due to absence or wrong choice of lubricants carries enormous cost. The base oil used for the formulation of most lubricants is environmentally hostile mineral oil and 30% of lubricants consumed ends up in the ecosystem. However, mineral oil reserve is depleting and the environmental concern about the damaging impact of mineral oil is growing. The search for environment friendly substitutes to mineral oils as base oils in lubricants has become a frontier area of research in the lubricant industry. Vegetable oils are perceived to be alternatives to mineral oils for lubricant base oils due to certain inherent technical properties and their ability to be biodegradable. This paper is an overview of recent research on vegetable oils as base oil for lubricant production with focus on the prospects, challenges and efforts to overcome the challenges of using vegetable oils as base oil for the production of industrial lubricants. Compared to mineral oils, vegetable oils in general possess high flash point, high viscosity index, high lubricity, low evaporative loss, are renewable, and are environmentally friendly. Poor oxidative and hydrolytic stability, high cost, food versus energy debate, high temperature sensitivity of tribological behaviour and poor cold flow properties are reckoned to be the limitations of vegetable oils for their use as base oils for industrial lubricants. The current effort to overcome these limitations includes the use of non edible oils, additives, chemical modifications and thermal modifications. More research and legislation in favour of the use of vegetable oil lubricants is recommended.

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Section: High Cost Food Versus Lubricant Competitionmentioning

confidence: 99%

Vegetable Oil Based Lubricants: Challenges and Prospects

et al. 2019

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“…Controlled friction losses with good fuel economy [85] Low volatility Enhanced reduction of exhaust emissions [59] Good viscosity index Applied for a wide range of temperature [110] Excellent boiling temperatures Reduced emissions during operation [111] Higher detergency Eliminating the requirement of detergent additives [59] Rapid biodegradation Minimized toxic contaminants and environmental danger [112] Good compatibility Better cleanliness with less harm at work environment [113] Table 5 Key benefits of bio-lubricant type in lubrication to their food competition, bio-based lubricants currently only make up a small portion of the market. The most obvious reasons would be that crude vegetable oils have poor lowtemperature characteristics and limited oxidative stability.…”

Section: Good Lubricitymentioning

confidence: 99%

“…As the world moves toward a sustainable economy, demand for vegetable lubricants is rising dramatically. The price of bio lubricants is 30-40% more expensive than the price of conventional lubricants, according to research [112]. To solve the problem, the government should engage in vast farming practices that will result in the production of a sizable quantity of vegetable oil in a range of forms.…”

Section: Good Lubricitymentioning

confidence: 99%

A Review on Bio-Lubricants as an Alternative Green Product:Tribological Performance, Mechanism, Challenges and Future Opportunities

et al. 2023

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Industries, especially those related to transportation, have relied extensively on petroleum products for lubrication, raising serious questions about the security of the world energy supply in the future. Observed that the end-products might be released back into the environment, posing major environmental risks. As a result, bio-based products have attracted increasing interest as prospective replacement to mineral-based type due to their important role in resolving the issues of pollution. With renewability and biodegradability as their greatest points, bio-based lubricants have been discovered to offer superior lubricating qualities to those of traditional mineral lubricants but currently have some undesirable qualities that need to be improved based on the literatures. Therefore, this research objective is to showcase the potential of bio-lubricants, both in terms of their environmental benefits and for technical applications, based on studies that have been published over the years. Review of the natural oil's molecular structures, physio-chemical characteristics, and lubricating ability is crucial for the creation and choice of lubricants. Owing to their accessibility in a wide range of characteristics, which are necessary for specific applications, bio-based lubricant is a possible replacement for a variety of applications, according to the primary findings. The results showed that sunflower oil improved in reducing friction and wear by 93.7% and 70.1%; and 77.7% and 74.1%, under TiO 2 and SiO 2 studied, against base lubricant values of 0.0511 and 11.2414 (mm 3 ), respectively. However, to get beyond some of the restrictions such as poor low temperature and oxidative stability, adequate chemical modification is necessary in solving agglomeration challenges.

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“…Additionally, the ZnO NPs are free of sulphur and phosphorus and are thus environment-friendly. The literature shows [15] that ZnO NPs have good anti-friction and anti-wear capabilities. Battez et al [16] studied the tribological behaviour of ZnO NPs (20 nm) blended in PAO base lube oil and found the ZnO NPs can form effective tribofilms that show superior tribological properties.…”

Section: Introductionmentioning

confidence: 99%

Frictional performance evaluation of sliding surfaces lubricated by zinc-oxide nano-additives

Elagouz

Ali

Hou

et al. 2019

Surface Engineering

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Automobile engines consume more than 30% of fuel energy as frictional power waste. Therefore, this paper investigated the tribological properties of ZnO nanoparticles (NPs) as a nano-additive to improve the wear and friction trends of the piston ring/cylinder liner interface, especially in boundary lubrication. This improvement occurs due to the formation of a solid tribofilm layer on the sliding surfaces that acts as an indirect coating to help separate and protect the worn pairs. Tribological experiments were carried out under different speeds and loading circumstances using a ring-on-liner reciprocating test bench. The surface morphologies of the tested samples were analysed using EPMA, FE-SEM, a 3D surface profilometer and XPS to illustrate the key mechanisms of the ZnO nano-additives. The tribotest results show that the coefficient of friction and specific wear rate of the ring were reduced by 20-23% and 43-88%, respectively, using the ZnO nano-additives compared with the reference oil.

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Towards Green Lubrication in Machining

Cited by 20 publications

References 74 publications

Vegetable Oil Based Lubricants: Challenges and Prospects

Vegetable Oil Based Lubricants: Challenges and Prospects

A Review on Bio-Lubricants as an Alternative Green Product:Tribological Performance, Mechanism, Challenges and Future Opportunities

Frictional performance evaluation of sliding surfaces lubricated by zinc-oxide nano-additives

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