A Comparative Study of Saturation Induction with Current Density of Electrodeposited Fe-Ni-W alloys

摘要

Fe-Ni-W alloys are electroplated from an ammonical citrate bath by applying three different current density values of 28, 56, and 84 mA/cm~2. The morphology and structure of Fe-Ni-W alloys are detected by Scanning Electron Microscope (SEM) and X-ray diffraction (XRD), respectively. The deposits are smooth and well adhered to the substrate at a current density of 28 mA/cm~2, while at current density values of 56 mA/cm2 and 84 mA/cm~2 deposits were smooth but showed cracks in the layer. All the as-plated deposits have nano crystalline structures and have two phases of WO_3 and BCC structured solid solution of Ni and W in Fe. The BCC structure is the dominant microstructure at high current density. The constituents in the films are determined by Energy Dispersive X-ray spectroscopy (EDX) technique. The magnetic saturation induction of the plated deposits is studied with the help of a Vibrating Sample Magnetometer (VSM).