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Improving thermal and tribological properties of enhanced biolubricant with graphene and maghemite nano-additives

Sadiq, Ibrahim Ogu and Suhaimi, Mohd. Azlan and Sharif, Safian and Mohd. Yusof, Noordin and Hisam, Juzaili (2022) Improving thermal and tribological properties of enhanced biolubricant with graphene and maghemite nano-additives. In: 3rd Malaysian International Tribology Conference, MITC 2020, 28 September 2020 - 30 September 2020, Langkawi, Kedah - Malaysia.

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Official URL: http://dx.doi.org/10.1007/978-981-16-9949-8_35

Abstract

Failure of biolubricants at elevated temperature hinder their efficient performance. These challenges are ameliorated using nano-additives to enhance the thermal and anti-wear properties of lubricants. In this study, coconut oil as base fluid was dispersed with 0.1% volume concentration of maghemite (γFe2O3) and exfoliated graphene (XGnP) nano-additives. Thermogravimetric analysis (TGA) was performed using thermal analyser to evaluate thermal degradation of nanolubricants and the base oil. In addition, anti-wear properties and viscosity of base coconut oil and the enhanced nanolubricants were evaluated. The TGA results indicates that oxidation onset temperature was retarded by 9 ℃ and 31.82 ℃ for maghemite (MGCO) and graphene (XGCO) enhanced nanolubricants respectively in comparison with base coconut oil (CCO). Friction reduction and anti-wear property of the nanolubricants showed better performance over the base oil. For graphene enhanced nanolubricant, a reduction of 10.4% and 5.6% in terms of COF and WSD respectively was observed while 3.3% and 4.3% reduction in COF and WSD respectively for maghemite enhanced nanolubricant when compared with the base oil (CCO). The excellent property improvement of thermal stability and tribological properties makes the enhanced lubricants a suitable candidate for consideration as machining lubricants.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:friction, nanolubricant, thermal stability
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:99373
Deposited By: Narimah Nawil
Deposited On:23 Feb 2023 04:12
Last Modified:23 Feb 2023 04:12

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