Influence of Composition of Amorphous Alloy Substrate on Electroless Co-B and Co-Fe-B Deposition

Abstract

Deposition behavior of electroless Co-B and Co-Fe-B were investigated with respect to the structural and magnetic properties of deposits, using the amorphous ribbon substrates. The catalytic activity sequence of amorphous ribbon electrode for anodic oxidation of DMAB was estimated from the current density-potential curve in the anodic partial electrolytic bath without containing the metal ions. Both the deposition rate and potential in the initial region were obtained in order of the catalytic activity, depending on the alloy compositions of substrates. The linearly step of the deposition rate was obtained against the deposition time. And also, the initial deposition potential may determine the structural and magnetic properties of the deposit with thickness of μm order.