The Effect of SiC Addition on AlNi Compact Mechanical Properties Produced Via Powder Metallurgy

Abstract

This research directed to produce Al-Ni alloys by powder metallurgy technique since of its marketable and industrial significant. Nickel and aluminum powders were determined their particle size then the powders mixed and blended with percent (Al - 20% Ni). Silicon carbide particles (SiC) powder supplemented to master alloy powder by percent (4-6- and 8 wt. %) separately then these powders mixed to obtain homogeneous distribution, then the powders compacted in cold pressure at 700 MPa. The sintering procedure was performed at (530°C) for 8 hrs. At vacuum atmosphere (10-4 torr). After cooling these samples grinded and polished to estimate microstructure, density, porosity, LOM, SEM, EDS, X-ray diffraction ,hardness and wear tests at dissimilar circumstances. Results showed that the hardness increased by (52%) and wear rate decreased by (55%) at 8 wt % silicon carbide addition, and it was the best results.

Erosion-Corrosion Behavior of Al-20%Ni-Al₂O₃ Metal Matrix Composites by Stir Casting

“…The specimens were cleaned with water and alcohol and dried in hot air. The etching process was done on the specimens with the help of a etching solution which composed of (99% H2O+1%HF) [32]. Then, the specimens were washed with water and alcohol and dried.…”