Frictional Characteristics Of Surface Textured Activated Carbon Composite Derived From Palm Kernel
This prospective study was designed to determine the process parameters for composite sample preparation, to reveal the suitable surface texture diameter size to control friction and the load-speed effect on friction characteristics of laser-surface-textured activated carbon composite derived from p...
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| Format: | Thesis |
| Language: | English English |
| Published: |
2019
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| Online Access: | http://eprints.utem.edu.my/id/eprint/24678/1/Frictional%20Characteristics%20Of%20Surface%20Textured%20Activated%20Carbon%20Composite%20Derived%20From%20Palm%20Kernel.pdf http://eprints.utem.edu.my/id/eprint/24678/2/Frictional%20Characteristics%20Of%20Surface%20Textured%20Activated%20Carbon%20Composite%20Derived%20From%20Palm%20Kernel.pdf |
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| Summary: | This prospective study was designed to determine the process parameters for composite sample preparation, to reveal the suitable surface texture diameter size to control friction and the load-speed effect on friction characteristics of laser-surface-textured activated carbon composite derived from palm kernel. The purpose is to recycle the abundant palm kernel waste material with lower coefficient of friction as demand nowadays. A sample composite disc was fabricated between 50 to 80wt.% of activated carbon derived from palm kernel by using hot compaction technique. The best composition produce was 60wt.% with hot press pressure and temperature of 1225kPa and 80˚C. A dimple form was textured on the sample surface using a laser machine. Two sliding test was conducted on both the textured and non-textured surfaces of the composite disc by using a ball-on-disc tribometer. The test was carried out at room temperature and under lubricated condition using 10w30 engine oil. The first test was to determine the suitable diameter size in range of 500 to 1200µm at constant sliding speed of 20rpm and load of 20N. The results showed that the suitable dimple diameter for maintaining a low friction coefficient was proposed to be 1000µm. The second test was conducted by using the selected diameter size obtained by changing the applied load and sliding speed value in range of 5 to 20N and 50 to 200rpm, respectively. The textured surface has reduced friction coefficient by increasing film thickness compared to that of the non-textured surface, particularly at higher sliding speed. This composite with textured has high potential to provide a lower friction material in boundary lubrication regime for engine application. |
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