表面处理对MA8镁合金微弧氧化氧化膜防腐性能的影响

IF 0.9 Q3 Engineering Surface Engineering and Applied Electrochemistry Pub Date : 2023-10-17 DOI:10.3103/S1068375523050046

Zh. I. Bespalova, I. A. Pyaterko, V. V. Dem’yan

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引用次数: 0

摘要

摘要——在微弧氧化之前，将MA8镁合金基底预浸渍在硝酸铈（III）和甘油的水溶液中，用于由含有氟离子的硅酸盐-碱性电解质形成氧化物陶瓷涂层。使用动电位极化曲线评估了这些涂层在预浸渍合金表面的防腐性能。根据动电位极化曲线计算的电化学参数表明，MA8镁合金表面氧化陶瓷涂层的存在显著降低了腐蚀电流密度，提高了极化电阻。测定了MA8镁合金基体在硝酸铈（III）和甘油水溶液中的预浸渍对腐蚀损伤机制的影响。

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The Influence of Surface Preparation on Corrosion-Protection Properties of Oxide Layers Formed on MA8 Magnesium Alloy by Microarc Oxidation

Abstract—

A MA8 magnesium alloy substrate was pre-impregnated in aqueous solutions of cerium(III) nitrate and glycerol before microarc oxidation, which was used to form oxide ceramic coatings from a silicate–alkaline electrolyte containing fluoride ions. The corrosion-protection properties of these coatings on the pre-impregnated alloy surface were assessed using potentiodynamic polarization curves. Electrochemical parameters calculated from the potentiodynamic polarization curves showed that the presence of the oxide ceramic coating on the surface of MA8 magnesium alloy significantly reduces the corrosion current density and increases the polarization resistance. It was determined that the pre-impregnation of the MA8 magnesium alloy substrate in aqueous solutions of cerium(III) nitrate and glycerol affects the mechanism of the corrosion damage.

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来源期刊

Surface Engineering and Applied Electrochemistry Engineering-Industrial and Manufacturing Engineering

CiteScore

1.60

自引率

22.20%

发文量

期刊介绍： Surface Engineering and Applied Electrochemistry is a journal that publishes original and review articles on theory and applications of electroerosion and electrochemical methods for the treatment of materials; physical and chemical methods for the preparation of macro-, micro-, and nanomaterials and their properties; electrical processes in engineering, chemistry, and methods for the processing of biological products and food; and application electromagnetic fields in biological systems.