Dry sliding wear behaviour of zinc oxide reinforced magnesium matrix nano-composites |
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| Affiliation: | 1. Department of Mechanical Engineering, Mookambigai College of Engineering, Pudukkottai, Tamilnadu 622502, India;2. Syed Ammal Engineering College, Ramanathapuram, Tamilnadu 623502, India;3. Department of Production Engineering, National Institute of Technology, Tiruchirappalli, Tamilnadu 620015, India;4. Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576, Singapore;5. Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai, Tamilnadu 600036, India;1. Department of Printed Electronics Engineering, Sunchon National University, Suncheon, South Korea;2. School of Engineering and Material Science, Queen Mary University of London, London E1 4NS, UK;1. Department of Mechanical Engineering, Kamaraj College of Engineering and Technology, Virudhunagar, TamilNadu, 626 001, India;2. Department of Mechanical Engineering, Mepco Schlenk Engineering College, Sivakasi, Tamilnadu, 626005, India;3. Department of Mechanical Engineering, Rajalakshmi Institute of Technology, Chennai 600 124, Tamil Nadu, India;1. Karabuk University, Technology Faculty, Department of Manufacturing Eng., 78050 Karabuk, Turkey;2. National Defense University, Land Forces NCO Voc. Sch., Department of Mechatronics, 10100 Balikesir, Turkey |
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| Abstract: | The main objective of the present work is to investigate the dry sliding wear behaviour of a magnesium matrix composite reinforced with zinc oxide nano-particles. Magnesium matrix composites have many applications, especially in the automotive and aerospace industries, due to their superior specific properties. A magnesium matrix composite with 0.5 vol.% ZnO nano-reinforcement was prepared using powder metallurgy and was hot extruded to eliminate pores. The wear behaviour of the Mg/ZnO nano-composite was investigated by conducting dry sliding tests as a function of wear with an oil-hardened non-shrinking (OHNS) steel disc as the counterpart on a pin-on-disc apparatus. Wear tests were conducted for normal loads of 5, 7.5 and 10 N at sliding velocities of 0.6, 0.9 and 1.2 m/s at room temperature. The variations of the friction coefficient and wear rate with the sliding distances (500 m, 1000 m and 1600 m) for different normal loads and sliding velocities were plotted and analysed. To study the dominant sliding wear mechanism for various test conditions, the worn surfaces were analysed using scanning electron microscopy. The wear rate was found to increase with the load and sliding velocity. |
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| Keywords: | Magnesium matrix composite Nano-reinforcement Powder metallurgy Wear behaviour Worn surface morphology |
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