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The metal housing is typically jointed with plastic fittings by conventional gluing method or embedding injection molding to produce this type of devices. We propose to improve this new technique with more practical approach. In plastic-aluminum substrate dissimilar joining, the 5052 aluminum plate coarsening process was performed to increase the porosity of the permeable dissimilar phase. The ABS polymer plus carbonized rice husk powder was later induced or deposited on the microstructure to improve the bonding effect. The plastic -aluminum substrate dissimilar joining is completed by the final step of ultrasonic welding. The finished substrate will be tested on the properties of tensile strength to ensure its quality. According to the simulation analysis and measuring results, the maximum temperature between the interface of ABS polymer and 5052 aluminum alloy is about 400~450 °C during ultrasonic welding, which can make the surface of ABS polymer to be melted. Furthermore, after drilling micro-hole array and covering ABS plus carbonized rice husk powder, the 5052 aluminum alloy shows better joining effect with ABS polymer sheet by ultrasonic welding. This improved approach does not require mold or injection molding machinery to produce the high quality plastic -aluminum bonding parts

Ultrasonic dissimilar joining of aluminum alloy and polymer with the composite material of ABS polymer doping carbonized rice husk