Preparation of Fe-Ni-Co alloy by ultrasonic electrodeposition
Fe-Ni-Co alloys are important transition metal alloys with great potential applications in hydrogen storage and magnetic materials fields.In this study,a Fe-Ni-Co alloy with high iron content was prepared on a pure titanium substrate using electrodeposition in an aminosulfonic salt-chloride electrolyte system.The study investigated the impact of pH value,temperature,current density,and ultrasonic power on the morphology,chemical composition,and crystal structure of Fe-Ni-Co alloy foils.The results show that the Fe-Ni-Co alloy foil had fewer surface pores,low impurity element content,and more uniform cross-sectional composition distribution when the pH was 2.0,temperature was 60℃,current density was 50 mA/cm2,and ultrasonic power was 45 W.The alloy is a γ-(Fe,Ni)phase with a face-centered cubic structure.It has good hardness and corrosion resistance due to the presence of Fe and Co as solutes in the Ni solvent.