In this work, corrosion inhibition of the AZ31 magnesium alloy was investigated in NaCl solutions containing different amounts of sodium molybdate inhibitor. Electrochemical, hydrogen evolution, microscopic, and spectroscopic experiments were utilized to examine the mechanism of corrosion inhibition by molybdates. The results showed that Na2MoO4 inhibitor provides reliable inhibition at high concentrations (150 mM). Surface examination by Raman and XPS spectroscopy confirmed the formation of a protective surface layer of mixed Mo(VI, V, IV) species. Based on these results, the mechanism of corrosion inhibition of the AZ31 alloy by aqueous molybdates was proposed.
Authors
- Maria Osipenko,
- Dr. Dmitry Kharitonov,
- Aliaksandr Kasach,
- dr hab. inż. Jacek Ryl link open in new tab ,
- Janusz Adamiec,
- Prof. Irina Kurilo
Additional information
- DOI
- Digital Object Identifier link open in new tab 10.1016/j.electacta.2022.140175
- Category
- Publikacja w czasopiśmie
- Type
- artykuły w czasopismach
- Language
- angielski
- Publication year
- 2022
