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Hybrid Sol-Gel Coatings: Smart and Green Materials for Corrosion Mitigation

LNEC, Laboratório Nacional de Engenharia Civil, Av. Brasil 101, Lisboa 1700-066, Portugal
Centro de Química, Universidade do Minho, Campus de Gualtar, Braga 4710-057, Portugal
Author to whom correspondence should be addressed.
Academic Editor: Naba K. Dutta
Coatings 2016, 6(1), 12;
Received: 17 December 2015 / Revised: 27 February 2016 / Accepted: 11 March 2016 / Published: 16 March 2016
(This article belongs to the Special Issue Multifunctional Organic-Inorganic Hybrid Thin Films and Coatings)
PDF [5161 KB, uploaded 16 March 2016]


Corrosion degradation of materials and metallic structures is one of the major issues that give rise to depreciation of assets, causing great financial outlays in their recovery and or prevention. Therefore, the development of active corrosion protection systems for metallic substrates is an issue of prime importance. The promising properties and wide application range of hybrid sol-gel-derived polymers have attracted significant attention over recent decades. The combination of organic polymers and inorganic materials in a single phase provides exceptional possibilities to tailor electrical, optical, anticorrosive, and mechanical properties for diverse applications. This unlimited design concept has led to the development of hybrid coatings for several applications, such as transparent plastics, glasses, and metals to prevent these substrates from permeation, mechanical abrasion, and corrosion, or even for decorative functions. Nevertheless, the development of new hybrid products requires a basic understanding of the fundamental chemistry, as well as of the parameters that influence the processing techniques, which will briefly be discussed. Additionally, this review will also summarize and discuss the most promising sol-gel coatings for corrosion protection of steel, aluminium, and their alloys conducted at an academic level. View Full-Text
Keywords: hybrid; coatings; sol-gel; corrosion; steel; green materials; aluminium; metallic hybrid; coatings; sol-gel; corrosion; steel; green materials; aluminium; metallic

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Figueira, R.B.; Fontinha, I.R.; Silva, C.J.R.; Pereira, E.V. Hybrid Sol-Gel Coatings: Smart and Green Materials for Corrosion Mitigation. Coatings 2016, 6, 12.

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