Evaluation of Corrosion Studies of as Casted Aluminum 6065 Metal Matrix Composite by Weight Loss Method

Aluminum matrix composites (AMCs) are a range of advanced engineering materials that can be used for a wide range of applications within the aerospace, automotive, biotechnology, electronic and sporting goods industries. AMCs consist of a non-metallic reinforcement (SiC, Graphite etc.) incorporated into Aluminum matrix which provides advantageous properties over base metal (Al) alloys. These include improved abrasion resistance, creep resistance, dimensional stability, exceptionally good stiffness-to-weight and strength-to-weight ratios and better high temperature performance. Present paper involves the study of corrosion properties of aluminum metal matrix composites and unreinforced alloy. AMCs  is prepared using Silicon Carbide and Graphite. Al 6065 series alloy is used to prepare composite with varied percentage of SiC (0, 2, 4%) and hybrid composite with equal amount of SiC and Graphite is prepared by liquid metallurgy technique using vortex method. The corrosion studies were carried out by weight loss method by immersing the specimen for 24 hrs., in various corrosion medium such as acid chloride, acid sulphate and neutral mediums. Results indicate that hybrid composite shows more resistance to corrosion.