Active anticorrosion and self-healing coatings: A review with focus on multi-action smart coating strategies. (20th July 2022)

• Record Type: Journal Article
• Authors: Udoh, Inime Ime; Shi, Hongwei; Daniel, Enobong Felix; Li, Jianyang; Gu, Songhua; Liu, Fuchun; Han, En-Hou
• Is Part Of: Journal of materials science & technology. Volume 116(2022)
• Page Start: 224
• Page End: 237
• Publication Date: 2022-07-20
• Subjects: Smart coating -- Active anticorrosion protection -- Self-healing -- Multi-action -- Protection mechanism; MSNs Mesoporous silica nanoparticles -- BTA Benzotriazole -- MSNs-BTA Benzotriazole-loaded MSN -- MSNs-BTA@PDA Polydopamine-coated MSNs-BTA -- ATAT 3-Amino-1, 2, 4-triazole-5-thiol -- HMCe Hierarchical mesoporous cerium oxide -- 2-MBI 2-mercaptobenzimidazole -- UF Urea-formaldehyde -- EIS Electrochemical impedance spectroscopy -- PDP Potentiodynamic polarization -- SVET Scanning vibrating electrode technique -- SEM Scanning electron microscope -- FESEM Field emission scanning electron microscopy -- SST Salt spray test -- SFIM Single-frequency impedance map -- OM Optical microscopy -- AFM Atomic force microscopy -- MD Molecular dynamics -- LSCM Laser scanning confocal microscope -- XPS X-Ray photoelectron spectroscopy -- XRD X-ray powder diffraction -- DFT Density functional theory -- DSC Differential scanning calorimeter -- SAXS Small-angle X-ray scattering -- TA Tannic acid -- LDHs Layered double hydroxides -- HAP Hydroxyapatite microparticles -- 8-HQ 8‐hydroxyquinoline -- 1-BSA 1‐H‐benzotriazole‐4‐sulfonic acid -- MBT 2-mercaptobenzothiazole -- PPG Polypropylene glycol -- PDMS Polydimethylsiloxane -- CS Chitosan -- HNTs Halloysite nanotubes -- NaNO3 Sodium nitrate -- UFMCs Urea formaldehyde microcapsules -- LO Linseed oil -- HDG Hot-dip galvanized steel -- IMPs Intermetallic particles -- LbL layer-by-layer -- HMSs Hollow mesoporous silica nanoparticles -- SANP Self-assembled nanophase particles -- IC Ion chromatography -- ICP-OES inductively coupled plasma - optical emission spectrometry -- WO32− Tungstate anions -- LEIS Localized electrochemical impedance spectroscopy -- EDS Energy dispersive X-ray spectroscopy -- CMFs Cellulose microfibers -- DOC Dodecylamine -- PEI polyethyleneimine; Metals -- Periodicals; Materials science -- Periodicals; Materials science; Metals; Periodicals; 620.1105
• DOI: 10.1016/j.jmst.2021.11.042
• Languages: English
• ISSNs: 1005-0302

Abstract

Highlights: Recent trends in active anticorrosion protective coatings are summarized. Self-healing coatings as defect closing routes for metal protection are reviewed. Functionalities and multi-action mechanisms in multifunctional coatings are discussed. Abstract: The development of smart coatings with potential for active anticorrosion and self-healing protection of metals is essential for long-term performance of metallic structures in aggressive chemical environments. Presently, emphasis has been placed on the development of advanced smart coatings for corrosion protection in different applications. Innovative multifunctional coatings with fascinating stimuli-responsive functionalities are considered "smart". The stimuli-responsive functionalities of these smart coatings when properly harnessed result in a class of coatings with inherent autonomous control of corrosion. Fundamentally, when metals are exposed to aggressive environments, occurrences at the metal-solution interface cause environmental changes. These changes can be controlled when triggers from external environment set off active components of smart coating, thereby enhancing coating's life and functionality. Common triggers include the availability of moisture, concentration of chloride ion, pH gradient, mechanical damage, impact, fatigue, light, redox activity and temperature. In this review, recent technological trends in active anticorrosion and self-healing coatings as functional routes for metal protection are summarized, stimuli responsiveness and mechanisms of inhibition are discussed, and recent multi-action protective systems are particularly focused on. Graphical abstract: Image, graphical abstract