Detail publikačního výsledku

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

DOSKOČIL, L.; HONČ, J.; BŘEZINA, M.; WASSERBAUER, J.

Originální název

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

Anglický název

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

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

Corrosion, AZ31 magnesium alloy, humic acid

Klíčová slova v angličtině

Corrosion, AZ31 magnesium alloy, humic acid

Autoři

DOSKOČIL, L.; HONČ, J.; BŘEZINA, M.; WASSERBAUER, J.

Rok RIV

2022

Vydáno

22.11.2021

Nakladatel

Tanger

Místo

Brno

ISBN

978-80-88365-00-6

Kniha

NANOCON Conference Proceedings - International Conference on Nanomaterials, 2021.

Strany od

160

Strany do

165

Strany počet

6

Plný text v Digitální knihovně

http://hdl.handle.net/

BibTex

@inproceedings{BUT177561,
  author="Leoš {Doskočil} and Jiří {Honč} and Matěj {Březina} and Jaromír {Wasserbauer}",
  title="THE ROLE OF HUMIC ACID IN THE CORROSION OF AZ31 MAGNESIUM ALLOY",
  booktitle="NANOCON Conference Proceedings - International Conference on Nanomaterials, 2021.",
  year="2021",
  pages="160--165",
  publisher="Tanger",
  address="Brno",
  doi="10.37904/nanocon.2021.4331",
  isbn="978-80-88365-00-6"
}