화학공학소재연구정보센터
Electrochimica Acta, Vol.50, No.22, 4335-4343, 2005
Aqueous electrodeposition of iron group-vanadium binary alloys
Electrodeposition of binary iron group (IG)-vanadium (V) alloys from aqueous citrate solutions was investigated. Addition of NH3(aq.) and increasing solution pH resulted in increased deposit V content, but non-metallic deposits were obtained at solution pH > 7. Increasing current density resulted in an almost linear decrease in V content and a sharp increase in hydrogen evolution (decreased current efficiency). In general, the amount of V deposited with the IG metal increased as follows: Ni < Fe << Co. XRD spectra indicated that preferred orientations from 25 degrees C solutions were not displaced by elevated temperature deposits. Changes in orientation may contribute to the deposit magnetic properties; e.g., Co-V deposits with (10 0) planes exhibit harder magnetization than deposits with (0 0 2) planes. (c) 2005 Elsevier Ltd. All rights reserved.