Effect of annealing on microstructure, hardness and electrochemical corrosion behavior of copper based alloys

Abu Bakr El-Bediwi, S. Bader, Zuhor Farag

Abstract


Modified copper (high copper based alloys) are used in structural parts and friction materials.  The aim of this work was to study the effect of annealing at 500, 600 and 700 °C for two hours on electrochemical corrosion behavior, hardness and microstructure of Cu98Sn2 and Cu98Ge2 alloys.  Vickers hardness, corrosion rate and corrosion current of  Cu98Sn2 and Cu98Ge2 alloys increased after annealed at 500, 600 and 700 °C for two hours.  Lattice microstrain of Cu98Sn2 and Cu98Ge2 alloys varied after annealed at 500, 600 and 700 °C for two hours.  X-ray and scanning electron microscope analysis show a significant change on microstructure of Cu98Sn2 and Cu98Ge2 alloys after annealed.  


Keywords


electrochemical corrosion behavior, hardness, microstructure, lattice microstrain, Annealing.

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ISSN: 2454-7042

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