Parameters influencing the electrodeposition of a Ni-Cu coating on Fe powders. II. Effect of particle size fraction,suspension density and rotation speed |
| |
Authors: | Email author" target="_blank">Andrea?TuroňováEmail author Miriam?Gálová Magdaléna??upicová Ladislav?Lux |
| |
Institution: | (1) Institute of Chemistry, Faculty of Sciences, P.J. Šafárik University, 041 54 Košice, Slovak Republic;(2) Department of Chemistry, Faculty of Metallurgy, Technical University of Košice, 042 00 Košice, Slovak Republic |
| |
Abstract: | The composition of a two-component Ni-Cu coating and the efficiency of its electrochemical deposition on Fe powder was studied
by constant current electrolysis. A fluidized bed arrangement was applied. The variable parameters were: the particle size
fraction, the density of the suspension of the Fe powder in the plating bath, and the intensity of the stirring of the fluidized
bed. Both the Cu and Ni contents in the deposit decrease with increase in the particle size, and with decrease in the suspension
density. Thus, the surface area available for the electrochemical process proved to be of high importance. Another important
factor is the quality of the contacts of the powder particles with the current carrying compact electrode during which the
deposition of Ni is preferred. This influence is manifested in a decrease of the Ni-Cu ratio in the deposit with an increase
in the particle size and rotation speed and, consequently, with a decrease in the suspension density. The current efficiency
values on the powder for optimum conditions reached 80%. |
| |
Keywords: | Binary Ni-Cu deposit Electrochemical plating Fe powder |
本文献已被 SpringerLink 等数据库收录! |
|