Effect of alternating voltage treatment on the microstructure and corrosion resistance of stannate conversion coating on AZ91D alloy
Source abstract
Abstract
A new stannate conversion coating (CC) on AZ91D alloy was synthesized by the application of alternative voltage (AV) treatment technique. By using AV technique, the formation process of CC can be controlled. SEM results indicated that a continuous and compact dual-layer CC was formed on alloy surface after AV treatment. TEM results revealed that the inner layer consists of magnesium-aluminum-stannum nanocrystals and amorphous, meanwhile, the outer layer is primarily a mixture of magnesium-stannum hydroxides and oxides with amorphous structure. The electrochemical experimental results revealed that AV treatment significantly improved the corrosion resistance of CC, which attributed to the distinguishing microstructure of AV-CC. (C) 2009 Elsevier Ltd. All rights reserved.
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Research context
OpenAlex topics: Magnesium Alloys: Properties and Applications · Corrosion Behavior and Inhibition · Aluminum Alloy Microstructure Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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