Abstract
Dog-bone shaped specimens of Cu foils were fabricated by a combination of electrodeposition and photolithography to investigate the effect of electrochemical condition on mechanical properties of the foils. Electrodeposition of Cu was conducted on a substrate with a dog-bone shaped metallic surface from an acidic CuSO4 solution at a constant current density. Mechanical properties of the Cu foils were investigated by tensile test. From the results of the test, we found that tensile strength was increased but strain to failure was decreased with increasing current density. In addition, SEM observations for the Cu specimens prepared with different current densities revealed that the crystalline size became smaller with increase in current density till it reached a value. We concluded that mechanical properties of the Cu foils are related to the grain size of the Cu deposits.
