NiCoFe Ternary Alloy Deposition: I. An Experimental Kinetic Study

Abstract

The anomalous electrodeposition of NiCoFe ternary alloys was examined. Ni deposition in the ternary system appeared inhibited compared with its single-metal deposition, which characterizes typical anomalous behavior. Fe deposition was enhanced, similar to recent findings in codeposited binary alloys. Both catalytic and inhibiting effects were observed for Co deposition. The inverse Tafel slopes for both the metal reduction reactions and the side reactions were determined and compared with the values obtained during the single-metal reductions. A common change in the inverse Tafel slopes suggested a dependent kinetic relationship between the metal and side reaction rate during NiCoFe alloy deposition.

Microelectromechanical Systems

“…Efficiency increases with current density. Similar trends for composition versus CD have been obtained for Fe-Co and Fe-Co-Ni deposition [74]; in ternary alloys Co and Ni both act as the MN metal and their deposition is inhibited.…”

Fabrication of high-aspect-ratio microscale Ta mold inserts with micro electrical discharge machining

“…In addition, the complex electrochemistry operating during electrodeposition often limits the type of elemental metals and the compositional range of alloys to be deposited (Zhuang and Podlaha 2000). These considerations motivate the search for alternative techniques for fabricating HARMS inserts out of materials with improved high temperature mechanical properties.…”

In-depth component distribution in electrodeposited alloys and multilayers

“…For a ternary alloy, an order of deposition preference can be deducted from the composition data of d.c. deposits. For iron-group metal alloys, this deposition preference is as follows: Fe>Co>Ni [34][35][36]. It is an open question how the order of the deposition preferences affects the composition evolution in the near-substrate zone.…”