Corrosion-resistant composite coatings on biodegradable magnesium alloys: In vitro studies


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A composite coating was formed on MA8, MA14, and MA12 magnesium alloys by plasma electrolytic oxidation with subsequent immersion of samples into a superdispersed polytetrafluoroethylene suspension. In vitro volumetry determined that using this coating significantly reduces the magnesium alloy dissolution rate. It was shown that superdispersed polytetrafluoroethylene seals pores of the coating, thus reducing the corrosion rate in an artificial medium that mimics human blood by ionic composition. However, the surface of the calcium phosphate coating (Ca: P = 1.61) containing hydroxyapatite remains open for contact with the environment. The obtained data suggested that the proposed method for surface treatment of MA8, MA14, and MA12 alloys is promising for producing biodegradable protective coatings on magnesium medical implants.

作者简介

D. Opra

Institute of Chemistry, Far-Eastern Branch

Email: smol_shaman@mail.ru
俄罗斯联邦, pr. Stoletiya Vladivostoka 159, Vladivostok, 690022

S. Gnedenkov

Institute of Chemistry, Far-Eastern Branch

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Email: smol_shaman@mail.ru
俄罗斯联邦, pr. Stoletiya Vladivostoka 159, Vladivostok, 690022

S. Sinebryukhov

Institute of Chemistry, Far-Eastern Branch

Email: smol_shaman@mail.ru
俄罗斯联邦, pr. Stoletiya Vladivostoka 159, Vladivostok, 690022

A. Puz’

Institute of Chemistry, Far-Eastern Branch

Email: smol_shaman@mail.ru
俄罗斯联邦, pr. Stoletiya Vladivostoka 159, Vladivostok, 690022

D. Mashtalyar

Institute of Chemistry, Far-Eastern Branch

Email: smol_shaman@mail.ru
俄罗斯联邦, pr. Stoletiya Vladivostoka 159, Vladivostok, 690022

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