Open AccessThe influence of substituted aromatic aldehydes on Zn-Mn alloy electrodeposition
Author(s) -
Mihael Bučko,
U.Č. Lačnjevac,
Jelena B. Bajat
Publication year - 2013
Publication title -
journal of the serbian chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.227
H-Index - 45
eISSN - 1820-7421
pISSN - 0352-5139
DOI - 10.2298/jsc130118025b
Subject(s) - benzaldehyde , plating (geology) , alloy , electrolyte , electrochemistry , scanning electron microscope , chemistry , zinc , inorganic chemistry , materials science , chemical engineering , organic chemistry , catalysis , electrode , geophysics , composite material , geology , engineering
Additives are necessary in the electrodeposition of Zn-Mn alloys at high current density, in order to reduce hydrogen evolution reaction and prevent dendrite formation. The influence of two aromatic aldehydes, 4-hydroxy-benzaldehyde and 3,4-dimethoxy-benzaldehyde, as the additives in Zn-Mn plating electrolyte, is examined in this work. The coatings characterization by scanning electron microscopy and X-ray energy dispersive spectroscopy, as well as the examination of additives effect by electrochemical methods, indicate a complex involvement of additive molecules in hydrogen evolution, as well as in Zn2+ and Mn2+ reduction. Consequently, the levelling action can be achieved and the chemical composition of the Zn-Mn alloy can be tailored, by adding the proper additive type and concentration in the plating electrolyte. [Projekat Ministarstva nauke Republike SRbije, br. III 45019