Influence Of Contact Pressure And Sliding Speed Dependence On The Tribological Characteristics Of An Activated Carbon Epoxy Composite Derived From Palm Kernel Under Dry Sliding Conditions

• Main Authors: Abdollah, Mohd Fadzli, Mahmud, Dayang Nor Fatin, Masripan, Nor Azmmi, Tamaldin, Noreffendy, Amiruddin, Hilmi
• Format: Article
• Language: English
• Published: Tsinghua University Press 2019
• Subjects: T Technology (General); TJ Mechanical engineering and machinery
• Online Access: http://eprints.utem.edu.my/id/eprint/24020/2/Friction2019.pdf; http://eprints.utem.edu.my/id/eprint/24020/; https://link.springer.com/content/pdf/10.1007%2Fs40544-018-0205-y.pdf; https://doi.org/10.1007/s40544-018-0205-y

The objective of this work is to investigate the influence of contact pressure and sliding speed on the coefficient of friction and wear of an activated carbon-epoxy composite derived from palm kernel under dry sliding conditions. A wear mode map approach was employed to identify the transitions from mild to severe wear of the composite. The dry sliding test was executed by utilizing a ball-on-disc tribometer at different contact pressures and sliding speeds with a constant sliding distance and operating temperature. The results showed that, regardless of the sliding speed, the friction coefficient and wear rate of the composite increased drastically when a critical limit of contact pressure is exceeded. As for the sliding speed, both the friction coefficient and wear rate increased first and thereafter decreased at a higher speed of 500 rpm. A wear mode map is proposed to classify the boundary from mild to severe wear regimes. The predominant wear failures identified include micro-crack, fine grooves, debonding, delamination, debris, broken carbon, and fracture.