Program and the Book of Abstracts (PDF) - Mrs-serbia.org.rs

Tenth Young Researchers Conference – Materials Science and Engineering
December 21-23, 2011, Hall 2, SASA, Knez Mihailova 35 & 36, Belgrade, Serbia
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Electrodeposition of Zn-Mn alloys with high Mn percentage
from chloride electrolyte
Mihael Bučko, J. B. Bajat, B. Jokić
Faculty of Technology and Metallurgy, University of Belgrade, Belgrade, Serbia
The manganese addition can significantly improve the corrosion resistance of sacrificial Zn
coatings. The best properties are obtained with 30 – 40 mass % Mn in Zn-Mn alloys. The scope of
this work was to employ chloride electrolyte, in electrodeposition of Zn-Mn alloys with optimal Mn
content on one side, and satisfactory surface appearance and morphology on the another side. The
influence of deposition current density and manganese concentration in the electrolyte was
investigated. The electrochemical reactions of interest were investigated by cyclic voltammetry and
chronoamperommetry. The samples obtained were characterized by scanning electron microscopy
and energy dispersive X-ray spectrometry.
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Research on local corrosion processes in low-alloyed pipeline steel
S. Belikov, Ksenia Sergeeva
The Ural Federal University named after First President of Russia B.N. Yeltsin,
Ekaterinburg, Russia
The main problem pipeline rupture can be defined as corrosion damage local tube parts.
Therefore it is important to recognize the effects of structure and nonmetallic inclusions on
corrosion resistance and particularly on pitting corrosion processes. The alloy used in this study had
a composition of 0.15C, 0.50Mn, 0.25Si, 0.52Cr, 0.20Cu, 0.13Ni, 0.05V. Optical metallography,
electron microscopy and potentiodynamic polarization methods are widely known as very powerful
methods to research microstructure and points of pitting formation. It was found the basic classes of
inclusions, their influence on pitting corrosion and dependence corrosion damage from
microstructure.
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