Stručni rad

https://doi.org/10.21278/TOF.41406

Fabrication and Tribological Behaviour of \(Mg-TiO_2\) Composites

Autchipillai Lakshmanan Pillai ; Department of Mechanical Engineering, Cape Institute of Technology, Kanyakumari, Tamilnadu, India
Gowthami Thankachi Raghuvaran Jinu ; Department of Mechanical Engineering, University College of Engineering, Nagercoil, Tamilnadu, India
Govindan Karthikeyan ; Department of Mechanical Engineering, Regional Campus of Anna University, Tirunelveli Region, Tirunelveli, India

Sažetak

In the present study pure magnesium was taken as a base metal which is reinforced with various weight percentages of \(TiO_2\) (2.5, 5, 7.5, 10 % wt). This is done through a vacuum stir casting route with argon as a shielding gas to prevent oxidation. The prepared samples were machined using the Electric Discharge Machining (EDM) to achieve accurate dimensions for the study of tribological properties. A computerized pin-on-disc machine is used to study the dry sliding wear behaviour of the Mg-based composites. Wear losses were calculated using a variety of load parameters (10N, 15N, 20N, and 25N), sliding velocities (1 m/s, 1.5 m/s, and 2.0 m/s) and the weight percentage of the reinforcement. The results proved that the wear loss increased with an increase in the load, and decreased with an increase in the sliding velocity. The wear resistance is improved with an increase in the percentage of reinforcements in the matrix. The morphology and distribution of reinforcements were analysed by means of Scanning Electron Microscopy (SEM) and Energy-Dispersive X-ray (EDX) spectroscopy, respectively. The results revealed a uniform distribution of TiO2 particles throughout the magnesium matrix in the \(Mg-TiO_2\) composites.

Ključne riječi

magnesium matrix composites; titanium oxide; dry sliding wear test; SEM analysis

Hrčak ID:

193656

URI

https://hrcak.srce.hr/193656

Datum izdavanja:

12.2.2018.

Posjeta: 1.879 *