Effect of organic extractants on the electrocrystallization of nickel fromaqueous sulphate solutions

Authors
Tripathy, BC Singh, P Muir, DM Das, SC
Citation
Bc. Tripathy et al., Effect of organic extractants on the electrocrystallization of nickel fromaqueous sulphate solutions, J APPL ELEC, 31(3), 2001, pp. 301-305
Citations number
18
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
JOURNAL OF APPLIED ELECTROCHEMISTRY
ISSN journal
0021891X → ACNP
Volume
31
Issue
3
Year of publication
2001
Pages
301 - 305
Database
ISI
SICI code
0021-891X(200103)31:3<301:EOOEOT>2.0.ZU;2-U
Abstract
The effect of the presence of commercial organic extractants LIX 84I, Cyane x 272, D2EHPA, Versatic 10 and TBP with or without Mg2+ on various electrod eposition parameters for nickel deposition on stainless steel cathode from aqueous sulphate solutions was investigated. The parameters included cathod ic current efficiency, deposit morphology, crystal orientation and cathodic polarization. There was no significant variation in the current efficiency in the presence of these additives, but changes were observed in the depos it morphologies and crystal orientations even though all the deposits were bright, smooth and coherent. Changes were also observed in the cathodic pol arization behaviour during nickel electrocrystallization in the presence of these additives. The effect of the additives on the electrokinetic paramet er, exchange current density (i(0)) has also been investigated.