Characterization and Properties of Mg–TiO$_2$ Composites Produced $via$ Ball Milling and Powder Metallurgy
B. Stalin, V. S. Vidhya, M. Ravichandran, A. Naresh Kumar, G.T. Sudha
Abstract
The new magnesium matrix composites reinforced with different weight fractions (0, The ball milled powders are compacted and sintered for further mechanical and characterization studies. With the increasing weight percentage of TiO 2 particles, the particles gradually show more homogeneous distribution in the matrix. Compared with the matrix, the compressive strength of the composites is improved. With the increasing TiO 2 contents from 0 to 12% wt., the ultimate compressive strength increases from 82 to 158 MPa, respectively, while the corresponding strain decreases. The improvement of the ultimate compressive strength and hardness of the Mg-TiO 2 composites is due to the homogeneous microstructure of TiO 2 in Mg matrix. Energy dispersive X-ray spectroscopy and scanning electron microscopy are used to study the morphology and distribution of reinforcements in the matrix material. An identical distribution of TiO 2 parti-