Publication: Analysis of tribological characteristics and performance of palm olein-based grease containing copper nanoparticles
| datacite.subject.fos | oecd::Engineering and technology::Mechanical engineering | |
| dc.contributor.author | Arif Izzuddin Bin Muhammad | |
| dc.date.accessioned | 2025-11-27T08:43:45Z | |
| dc.date.available | 2025-11-27T08:43:45Z | |
| dc.date.issued | 2024-04-01 | |
| dc.description.abstract | The harmful environmental effect of commercial mineral greases has been raising concerns in the community. Many had reported on the benefit of mineral grease, however, the toxicity and depletion of mineral grease had led to the interest in developing a more sustainable and environmentally friendly grease lubricants. In addition, without nanoparticles such as copper and graphene in grease lubricants, bearings can be exposed to friction and wear faster. Therefore, the aim of this study is to investigate the tribological characteristics and performance of the developed palm olein-based grease with added copper nanoparticles additive. In this study, palm olein based grease was developed using palm olein as base oil and lithium stearate as a thickener. The copper nanoparticle additive was dispersed in the palm olein grease at concentrations of 0.25 and 0.50 wt% and the optimum concentration with the best performance is investigated. The palm olein grease was produced to NLGI 2 grade consistency, which is widely used and suitable for multipurpose applications. This grease is expected to be suitable for a wide range of industries, including agriculture and forestry applications, where the machineries are subjected to environmental exposure. The tribological tests were conducted using a four-ball tribometer to evaluate the wear and friction characteristics of the formulated grease. Further work has been done to investigate the performance of the developed grease by performing an experimental work using a roller bearing test rig. The performance of the palm olein grease was compared with a commercially available mineral grease lubricant. Surface roughness and wear characteristics of the inner race of the roller bearing were analysed periodically and the vibration level was measured. The formulated palm olein grease with copper nanoparticles additive demonstrated enhanced wear resistance, comparable performance to commercial mineral greases during the four-ball friction test with small friction value and wear, and superior performance to commercial mineral grease during the roller bearing test with reduced vibration levels and lower surface degradation. These findings contribute to the knowledge and understanding of palm grease formulations and their potential applications in tribological systems. | |
| dc.identifier.uri | https://erepo.usm.my/handle/123456789/23260 | |
| dc.language.iso | en | |
| dc.title | Analysis of tribological characteristics and performance of palm olein-based grease containing copper nanoparticles | |
| dc.type | Resource Types::text::thesis::master thesis | |
| dspace.entity.type | Publication | |
| oairecerif.author.affiliation | Universiti Sains Malaysia |