Influence Mechanism of (NH4)2SO4 on the Composition and Structure of Fe-Co Alloys

Fe-Co alloys have the advantages of high saturation magnetization and magnetic elongation. They are used in electromagnet pole heads, earphone vibration films, magnetostriction transducers, so on. At present, few papers been published on co-deposition process alloys. In present work, smooth dense films 10 μm were successfully prepared an economical, green, sulfate solution system via electrodeposition. The cathodic polarization curves measured separately under different conditions, electrochemical analyses showed that increase main salt concentration is beneficial for obtaining higher deposition rates. An temperature can current density reduction Fe2+, 50 °C a suitable at which to prepare Fe-deposited layer with flat surface. Co2+ favor co-electrodeposition Secondly, EDS results mass fraction Co increased linearly solution. gradually density. decreased (NH4)2SO4 concentration. addition, XRD grain size alloy was closely related electrolyte, smallest crystallite film 17 nm. SEM significantly affect surface morphology cracks obviously removed.