Aluminum matrix composite which was reinforced by ceramic is one of MMCs which is developed as
automotive port. This current research use aluminum as matrix: and alumina (Al2O} powderas
reinforced with volume fraction of 10%, 20%, 30%, 40%. With-Almg coatied by electroless. The result
show that composite with Al+Mg coating owned better interfacial bonding than composite without
coating. The highest elasticity moduli of Al2O3 is forward at volume fraction of 40% is 259.9 GPa.
However elasticity modulus of composite without coating treatment with volume fraction 40% is l 78,8
GPa, or increased about 45%.
