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Study of Coatings Formed on Zirconium Alloy by PlasmaElectrolytic Oxidation in Electrolyte with Submicron YttriaPowder Additivesстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или ScopusДата последнего поиска статьи во внешних источниках: 27 октября 2021 г.
- Авторы: Savushkina Svetlana, Gerasimov Mikhail, Apelfeld Andrey, Suminov Igor
- Журнал: Metals
- Номер: 11
- Год издания: 2021
- Издательство: MDPI
- Местоположение издательства: Basel, Switzerland
- Первая страница: 1
- Последняя страница: 17
- Аннотация: Coatings with thickness 40 to 150 µm were formed by plasma electrolytic oxidation (PEO)on the zirconium alloy Zr-1Nb (Zr-1% Nb) in the slurry electrolyte containing 9 g/L Na2SiO3 5H2O,5 g/L Na(PH2O2) and 6 g/L submicron Y2O3 yttria powder during 60 min under the AC electricalmode at current densities 20; 30 and 40 A/dm2. The surface morphology, structure, composition,and corrosion-protective ability of the formed coatings have been analyzed. At PEO current density30 A/dm2, a predominantly tetragonal phase of zirconia was formed in coatings. Increasing thePEO current density up to 40 A/dm2 promoted the formation of the coating surface layer containingsubmicron yttria particles. Electrochemical polarization studies in 0.5% LiOH solution showed thatPEO coatings demonstrated high corrosion-protective ability. The dependence of the polarizationcurrents on the PEO current density was found to be inconsequential.
- Добавил в систему: Герасимов Михаил Владимирович
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