PENGARUH TEMPERATUR PEMANASAN TERHADAP SIFAT MEKANIK DAN STRUKTUR MIKRO KOMPOSIT AL/AL2O3 DENGAN MENGGUNAKAN METODE PRIMEX

Abstract

The production of Al/Al2O3 metal matrix composite can be carried out by pressureless metal infiltration processs (PRIMEX). The experiment was conducted using aluminium ingot as a matrix and 50%Vf Al2O3 powder as a reinforcement which is mixed with 10% Mg and 13% Mg powder for wetting agent. The variables of this experiment are holding time and firing temperature to investigate the effect of these conditions onmechanical properties of Al/Al2O3 metal matrix composites. Holding time was conducted for 10 hours and firing temperatures was 1000, 1100°C respectively. The composites produced are analysed both mechanical properties and metalography such as densities, porosities, hardness, as well as wear rate. The results showed that the longer holding time and increasing firing temperature will increase mechanical properties of Al/Al2O3 metal matrix composites, and it is found that the optimum mechanical properties at 1100°C for 13% mg