Tailoring corrosion resistance and wettability of AZ31 Mg alloy via laser, hot water, and silicone oil heat treatments
Source abstract
Abstract
Magnesium alloys are considered promising candidates for industrial applications due to their mechanical properties and surface tailoring capability. However, magnesium alloys need wettability control because of their low surface energy and rapid oxide layer formation. Additionally, they exhibit poor corrosion resistance and corrode rapidly in chloride environments, causing pitting and structural degradation. Laser surface texturing is one of the unique processes to modify the surface morphology and surface modification of AZ31 Mg alloy. However, the precise control of laser texturing along with chemical surface treatment parameters to tailor the wettability and corrosion behavior of Mg alloys is still a challenge. This study aims to explore the post-treatment strategies for surface modification and the impact of each treatment on surface chemistry, surface morphology, and electrochemical behavior of AZ31 Mg alloy and wettability and corrosion behavior, simultaneously. This multi-step laser/hot water/silicone oil heat treatment surface engineering strategy enabled the surface tunability from hydrophilic (contact angle ≈ 88°) to superhydrophobic (≈ 178°) and significantly reduced the corrosion current density by up to 120 times lower as compared to flat Mg surface while increasing the charge transfer resistance by 30 folds. This facile surface engineering approach can open new pathways for targeted corrosion applications in industrial as well as healthcare applications. • Surface properties of AZ31 Mg alloy were modified by post-processes. • Superhydrophobic-superhydrophilic surfaces were achieved by different post-process combinations. • Laser treatment increased surface roughness and affected corrosion and wettability. • Post-processing by silicone oil and hot water treatment influenced wettability and corrosion behavior. • Corrosion resistance and corrosion acceleration could be achieved by different post-process combinations.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Magnesium Alloys: Properties and Applications · Bone Tissue Engineering Materials · Corrosion Behavior and Inhibition
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (89)
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