Tribological Performance Of Hybrid Composites Based On Palm Kernel Activated Carbon And Alumina Blend

Chen, Wei Wei (2018) Tribological Performance Of Hybrid Composites Based On Palm Kernel Activated Carbon And Alumina Blend. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Nowadays, it is expected the demand of new composites with optimum tribological performance is growing in industry applications. Hybrid composites are finding increased applications because of the improved mechanical properties and wear resistance and hence are better substitutes for single reinforced composites. On the recent global green technology trend, innovative and sustainable raw materials are becoming a priority choice for manufacturer. Agricultural wastes may consider as potential sustainable materials such as carbon consisting wastes to be treated as new reinforcement substitutes in enhancing tribological properties. There are limited tribology studies regarding to reinforcement of agricultural wastes carbon with good wear properties metal. The objectives of this study were to determine optimal composition and tribological properties of blended hybrid composite sample of Palm Kernel Activated Carbon (PKAC) with Aluminium Oxide/ Alumina, AL2O3 and to compare its wear performance with conventional composites, SK2 carbon steel disc by conducting ball-on-disc tribometer dry sliding test. Basically, PKAC and AL2O3 were measured according to the set compositions and pressed into disc shaped with size of 74mm diameter using hot compaction technique. Some basic mechanical tests were done when the disc specimens were ready such as surface roughness and hardness tests. Then, specimens were tested through ball-on-disc tribometer test under unlubricated condition at room temperature and surface morphology of specimens were studied by using 3D Surface Profilometer. Collected data were analyzed through qualitative and quantitative approaches. This study has found that friction coefficient and wear rate are highly affected by composition percentages with respect to weight of samples due to the amount of content of PKAC, AL2O3 and epoxy. Through the comparison between two hybrid composites, PKAC+AL/E (60/40) exhibit lower friction coefficient than PKAC+AL/E (50/50) with difference of 0.057 while for specific wear rate, PKAC+AL/E (60/40) is slightly higher than PKAC+AL/E (50/50) with insignificant difference of 8.530×10-8 mm3/Nmm. Hence, PKAC+AL/E (60/40) was suggested as optimal composition hybrid composites which exhibited better wear performance in this study.

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