THE ROLE OF HUMIC ACID IN THE CORROSION OF AZ31 MAGNESIUM ALLOY

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F21%3APU144291" target="_blank" >RIV/00216305:26310/21:PU144291 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.37904/nanocon.2021.4331" target="_blank" >http://dx.doi.org/10.37904/nanocon.2021.4331</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.37904/nanocon.2021.4331" target="_blank" >10.37904/nanocon.2021.4331</a>

Result language
angličtina
Original language name
THE ROLE OF HUMIC ACID IN THE CORROSION OF AZ31 MAGNESIUM ALLOY
Original language description
Magnesium alloys used as sacrificial anodes can interact with humic acids (HAs) in soil and water environments. Therefore, these natural organic molecules can have an impact on the corrosion behaviour of magnesium materials. In this work, the aim was to investigate the effect of lignitic HA on the corrosion of AZ31 magnesium alloy in 3.5 % NaCl at different pH (5, 7 and 9). The results showed that HA increased the corrosion rate about four times at pH 7, while it weakly decreased the corrosion rate at pH 5 and 9. The acceleration of corrosion is probably related to the depletion of Mg2+ ions by forming complexes with HA instead of producing Mg(OH)2. The increase in corrosion resistance may be related to the reduced stability of the complexes and adsorption on the AZ31 alloy surface at pH 5 and 9. Surface analysis suggested that the presence of HA promotes the formation of Mg(OH)2 nanoparticles.
Czech name
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Czech description
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Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
NANOCON Conference Proceedings - International Conference on Nanomaterials, 2021.
ISBN
978-80-88365-00-6
ISSN
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e-ISSN
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Number of pages
6
Pages from-to
160-165
Publisher name
Tanger
Place of publication
Brno
Event location
Brno
Event date
Oct 20, 2021
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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