Corrosion behavior of the Mg0.8Ca alloy modified by wollastonite coating

M. B. Sedelnikova, A. V. Ugodchikova, Yu P. Sharkeev, T. V. Tolkacheva, A. I. Tolmachev, A. A. Shkoldina, V. S. Egorkin, O. V. Kazmina, J. Schmidt

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Silicate coatings were deposited on Mg-0.8 wt % Ca alloy by the micro-arc oxidation method at the applied voltages of 350-500 V, in the electrolyte containing wollastonite powder. The coating morphology and elemental composition were studied with the help of the scanning electron microscopy and energy-dispersive X-ray spectroscopy. Elongated crystals similar to wollastonite particles were observed on the coatings surface. The results of elemental analysis confirmed the high content of silicon and calcium in the coatings. After 16-day of the immersion in 0.9% NaCl solution the mass loss was 20% and 5-10% for the bare alloy and for the coatings respectively. Electrochemical studies revealed that the corrosion resistance of the coatings is ten times higher than of the uncoated magnesium alloy.

Original languageEnglish
Title of host publicationProceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2019
EditorsVictor E. Panin, Sergey G. Psakhie, Vasily M. Fomin
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735419124
DOIs
Publication statusPublished - 19 Nov 2019
EventInternational Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2019 - Tomsk, Russian Federation
Duration: 1 Oct 20195 Oct 2019

Publication series

NameAIP Conference Proceedings
Volume2167
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceInternational Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2019
CountryRussian Federation
CityTomsk
Period1.10.195.10.19

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Sedelnikova, M. B., Ugodchikova, A. V., Sharkeev, Y. P., Tolkacheva, T. V., Tolmachev, A. I., Shkoldina, A. A., ... Schmidt, J. (2019). Corrosion behavior of the Mg0.8Ca alloy modified by wollastonite coating. In V. E. Panin, S. G. Psakhie, & V. M. Fomin (Eds.), Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2019 [020314] (AIP Conference Proceedings; Vol. 2167). American Institute of Physics Inc.. https://doi.org/10.1063/1.5132181