International Journal of Modern Science and Technology

INDEXED IN 

ISSN 2456-0235

​​​​​International Journal of Modern Science and Technology, Vol. 2, No. 2, 2017, Pages 61-69. 

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​Correlation of Wear Rate with Surface Hardness of Pure Nylon and Graphite-Reinforced Nylon Composites

A. Ayesha, M. A. Islam 
Department of Materials and Metallurgical Engineering, Bangladesh University of Engineering and Technology, Dhaka-1000.
*Corresponding author’s e-mail: ayesha_hossain24@yahoo.com

​Abstract
Comparative tribological performance of pure nylon and 1 % (w/w) micron sized graphite particle reinforced nylon composite has been investigated. The influence of increasing sliding velocity and time on the wear rate has been revealed in this study. Wear test was carried out in a pin-on-disc type arrangement using 2 kg dead load under 0.43, 0.86 and 1.26 m/s sliding velocities in dry sliding condition. Interestingly, wear rate seems to show a downward trend with time in the composite sample but increases with the sliding velocity for both cases, although the effect is less pronounced in the composite samples. The addition of graphite was found to cause up to 7 fold decrease in wear rate and enhance tribological properties. The trends in wear rate variations at all conditions were found to be well correlated with surface hardness which were further complemented by surface roughness and morphological examinations.

​​Keywords: Nylon; Graphite; Sliding wear; Hardness.

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