Corrosion and corrosion inhibition of WE43 magnesium alloy were investigated in NaCl solutions containing different amounts of sodium molybdate. Electrochemical, microscopic, and spectroscopic experiments were utilized to examine the mechanism of corrosion inhibition by molybdates. Electrochemical data showed that Na2MoO4 inhibitor provides reliable inhibition at concentrations at and above 100 mM. Raman and XPS spectroscopy demonstrated that the formed surface layer consists of mixed Mo(V, IV) species. This layer provided inhibition with an efficiency of 91–99% after 24 h of exposure. A two-step oxidation-reduction mechanism of corrosion inhibition of the WE43 alloy by aqueous molybdates was proposed
Authors
- Dr. Dmitry Kharitonov,
- Małgorzata Zimowska,
- dr hab. inż. Jacek Ryl link open in new tab ,
- dr hab. inż. Artur Zieliński link open in new tab ,
- Maria Osipenko,
- Janusz Adamiec,
- Angelika Wrzesińska,
- Prof. Per Claesson,
- Prof. Irina Kurilo
Additional information
- DOI
- Digital Object Identifier link open in new tab 10.1016/j.corsci.2021.109664
- Category
- Publikacja w czasopiśmie
- Type
- artykuły w czasopismach
- Language
- angielski
- Publication year
- 2021
