Investigation of The Effect of Cr2O3 Particles on Al-Si Matrix Composites Produced by Powder Metallurgy

Metal matrix composite materials can be produced by powder metallurgy method. In this study, material with Al+12wt%Si was (P/M) mixed adding 5wt%, 10wt% and 15wt% Cr2O3 powder. + mixture powders were pressed unidirectional 500MPa pressure in a cylindrical mold sintered at 500 ºC. After sintering, optical microstructure, Scanning Electron Microscope (SEM), Energy Dispersive Spectrometer (EDS) microhardness analyzes of the samples made. When results examined, it observed that porous structure formed all samples. Moreover, lowest amount measured sample added %15wt