The structure and composition of novel electrodeposited Sn–Fe and Sn–Co–Fe alloys from a flow circulation cell system

Abstract

This study involved the use of a flow circulation cell, using varying circulation rates as a room temperature process (20 • C). Mössbauer and XRD analysis were conducted to ascertain whether amorphous or microcrystalline structures could be obtained at 20 • C using a range of current densities. Amorphous or microcrystalline structures of Sn-Fe and Sn-Co-Fe have potentially important industrial applications for energy efficient cells, for use as high performance electrodes in lithium batteries, as environmentally acceptable corrosion resistant materials and are derived from an energy efficient environmentally friendly electrolyte process which would be acceptable as an industrial process. 57 Fe and 119 Sn Mössbauer investigations supported by XRD analysis confirmed that the room temperature flow circulation cell gave rise to previously unknown non-equilibrium amorphous structures which do not occur in the corresponding thermally prepared alloys as shown in the thermal equilibrium diagrams. Mössbauer analysis shows these alloys to be both amorphous and ferromagnetic. It is shown that the flow circulation cell used at 20 • C based on the 2 M. El-Sharif et al. environmentally friendly gluconate bath reported gives amorphous based Sn-Fe and Sn-Co-Fe alloys over a useful range of current densities facilitated by using a range of circulation rates.

Tartrate-Based Electrolyte for Electrodeposition of Fe–Sn Alloys

“…Experimentally, they were prepared by DC-magnetron sputtering [6] and solid state reaction [2,3]. The available literature on electrodeposition in the Fe-Sn system showed no results for the preparation of Fe 5 Sn 3 and Fe 3 Sn [10,26,27]. The layers on the Hull cell samples deposited with 20 and 80 mA/cm 2 at different pH values were characterized by XRD diffraction.…”

Electrodeposition of Fe-Sn from the chloride-based electrolyte

“…The iron-rich compounds Fe3Sn2, Fe5Sn3 and Fe3Sn are ferromagnetic [3] and, due to their low cost and low harm to health and environment, interesting for industrial usage. Possible applications of the Fe-Sn alloy deposits are magnetic recording [4,5] or corrosion protection coatings [6].…”