Formation of Galvanic Cells and Localized Corrosion of Zinc and Zinc Alloys under Atmospheric Conditions
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22350%2F17%3A43913814" target="_blank" >RIV/60461373:22350/17:43913814 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.5006/2139" target="_blank" >http://dx.doi.org/10.5006/2139</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.5006/2139" target="_blank" >10.5006/2139</a>
Alternative languages
Result language
angličtina
Original language name
Formation of Galvanic Cells and Localized Corrosion of Zinc and Zinc Alloys under Atmospheric Conditions
Original language description
Atmospheric corrosion of Zn and Zn alloys with local NaCl contaminations was studied in situ by scanning Kelvin probe. The corrosion process was accompanied by the formation of clearly separated anodic and cathodic locations and local galvanic cells on the surface. The corrosion activity correlated to variations in Volta potential during air to nitrogen transients. The effect of dielectric and semiconducting solids on the efficiency of cathodic reaction on zinc was investigated. The rate of oxygen reduction was high on semiconducting ZnO films with defective structure, as they are effective donors of electrons. Mg, Ti, Cr, and Al were alloyed to zinc to modify the composition of surface oxide films. The addition of Mg provided the most effective corrosion inhibition, blocking completely the spreading of the cathodic area from NaCl contamination. The other elements had minor influence, but might be applied for further improvement of the Zn-Mg system. The effect of Mg is believed to be connected to semiconducting properties of the formed surface oxide film.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
CORROSION
ISSN
0010-9312
e-ISSN
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Volume of the periodical
73
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
77-86
UT code for WoS article
000394444400009
EID of the result in the Scopus database
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