1. Home page
  2. Search

Electrocrystallisation of zinc from acidic sulphate baths; A nucleation and crystal growth process

This item is provided by the institution :
National Technical University of Athens   

Repository :
Digital Library of National Technical University of Athens | Dspace@NTUA   

see the original item page
in the repository's web site and access all digital files if the item*



Electrocrystallisation of zinc from acidic sulphate baths; A nucleation and crystal growth process (EN)
Bouroushian, M (EN)
Vasilakopoulos, D (EN)
Spyrellis, N (EN)
journalArticle (EN)
2014-03-01T01:30:19Z
2009 (EN)
The electrochemical nucleation and growth of zinc on low-carbon steel from acidic (pH 2.0-4.5) baths containing ZnSO4, NaCl, and H3BO3, was studied by means of chronoamperometry at various cathodic potentials under a charge-transfer controlled regime. It is shown that at overpotentials in the range 0.30-0.55 V (negative to the Zn2+/Zn redox value) the electrodeposition proceeds by instantaneous three-dimensional nucleation, which turns to progressive at higher overpotentials and/or very acidic baths. At low cathodic overpotentials (<0.30 V), a two-dimensional contribution limited by the incorporation of Zn ad-atoms in the developing lattice becomes significant at the early stages of deposition, and is more progressive in type the more acidic is the bath pH. Nucleation rate constants were calculated and correlated analytically with the respective potentials, using the classical theory of heterogeneous nucleation, which though fails to lead to reasonable values for the critical nucleus size. © 2008 Elsevier Ltd. All rights reserved. (EN)
Electrochemistry (EN)
Crystal growth (EN)
Grain boundaries (EN)
Reasonable values (EN)
Nucleation (EN)
Rate constants (EN)
Two-dimensional (EN)
Heterogeneous nucleations (EN)
Nucleation rates (EN)
Over potentials (EN)
Ad-atoms (EN)
Classical theories (EN)
Cathodic overpotentials (EN)
Critical nucleus sizes (EN)
Acidic baths (EN)
Electrochemical nucleations (EN)
Electrodeposition (EN)
Electrocrystallisation (EN)
Chronoamperometry (EN)
Low-carbon steels (EN)
Three dimensional (EN)
Charge-transfer (EN)
Crystal growth process (EN)
Crystallization (EN)
Sulphate baths (EN)
Sodium chloride (EN)
Cathodic potentials (EN)
Zinc (EN)
Zinc electrodeposition (EN)
Carbon steel (EN)
Electrochimica Acta (EN)
English
PERGAMON-ELSEVIER SCIENCE LTD (EN)
National Technical University of Athens
Digital Library of National Technical University of Athens | Dspace@NTUA
Κεντρική Βιβλιοθήκη Ε.Μ.Π.
Ιδρυματικό Αποθετήριο
Δημοσιεύσεις μελών Δ.Ε.Π. σε περιοδικά



*Institutions are responsible for keeping their URLs functional (digital file, item page in repository site)