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Self-healing and superhydrophobic coatings for corrosion inhibition and protection

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Abstract

Corrosion of metal structures and consumer products has been a significant problem since the start of the industrial revolution. However, the inhibition and prevention of corrosion have only been an active area of study in the last century. The need for smart and functional coatings has recently become a large area of interest due to the ability of these coatings to be adapted to a variety of materials, mechanical and chemical conditions, and sporadic environmental conditions. One of the most viable methods by which corrosion can be prevented is through coatings. Self-healing coatings demonstrate a novel method of autonomic repair for microcracks using self-healing polymers encapsulated with polymerizable species into microparticles and nanoparticles. Additionally, these microparticles and nanoparticles can also be loaded with corrosion inhibitors that are released upon mechanical or chemical damage, thereby reducing corrosion. The use of superhydrophobic coatings leads to improved corrosion resistance due to the modification of the wettability of the coating, thereby changing its hydrophilic or hydrophobic response. This review details and provides a new perspective on self-healing and superhydrophobic coatings as well as future outlooks.

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Correspondence to Pradeep L. Menezes.

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Manoj, A., Ramachandran, R. & Menezes, P.L. Self-healing and superhydrophobic coatings for corrosion inhibition and protection. Int J Adv Manuf Technol 106, 2119–2131 (2020). https://doi.org/10.1007/s00170-019-04758-z

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