Chiang Mai Journal of Science

     In this study, waste magnesite (WM) particles with different weight fractions (2.5%, 5%, and 7.5%) were used as particulate material in 6061 aluminium alloy to produce composites with improved properties. The composite material was manufactured using a stir-casting method. A surface morphology investigation confirms the uniform distribution and good interfacial bonding of the WM particles within the alloy base. The addition of 5% WM particles was found to improve the values of tensile strength of 146.68 MPa, hardness of 131.6 HV and coefficient of friction of 0.565. Incorporating 7.5% WM was found to give a low wear of 161 μm and a corrosion current of 8.5 x 10^-6 A. The results obtained confirm that such a proportion of WM particles in Al 6061 alloy provides excellent anticorrosion protection, wear properties, and good mechanical properties. Adding 5% WM to Al 6061 improves overall performance characteristics among other ratios.