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Intelligent Stannate-Based Coatings of Self-Healing Functionality for Magnesium Alloys

Abstract:

Stannate conversion coating treatment has been proposed to improve the corrosion resistance of magnesium alloys in corrosive chloride media. This coating treatment is easy to apply at a relatively low cost and without the need of significant safety equipment. A new stannate coating formulation has been designed to add self-healing functionality to the magnesium alloy. The self-healing capability of stannate-coated samples and their performance were investigated in 3.5. wt.% NaCl using gas collection, salt spray chamber tests, electrochemical measurements, and microscopic examination.