Magnetic field effect on Molybdenum-based alloys

O. Aaboubi¹ - J. Douglade¹ - P. R. Zabinski² - J.-P. Chopart¹

¹ LACM - DTI, UFR Sciences, BP1039, 51687 Reims Cedex 2, France
² Physical Chemistry and Electrochemistry Laboratory, Faculty of Non-Ferrous Metals, AGH University of Science and Technology, 30-059 Krakow, Poland

Abstract
Preliminary results obtained during the electrodeposition of Cobalt-Molybdenum (CoMo) and Cobalt-Molybdenum-Nickel (CoMoNi) alloys in the presence of a homogeneous magnetic field for various orientations of the working electrode surface are reported. The stationary current-potential curves and electrochemical impedance spectroscopy (EIS) measurements show that for the binary CoMo alloys the magnetic field effect is observed only in a restricted potential region. For the ternary CoMoNi, the electrolysis current and the EIS responses are strongly modified by the magnetic field in the whole cathodic potential range. For a horizontal working electrode maintained at a constant potential, a typical evolution of the stationary current I ∝ B^1/3 has been obtained. Tables 1, Figs 5, Refs 17.