Self-Healing Coatings for Corrosion Inhibition of Metals

Yabuki, Akihiro

doi:10.5539/mas.v9n7p214

Cited by 12 publications

(5 citation statements)

References 24 publications

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“…Self-healing coatings are required for the total or partial repair of coated areas damaged by aging or unexpected aggressive events. Two main strategies have been pursued regarding self-healing coatings for corrosion protection: (i) mending defects formed in the polymeric coating matrix via addition of polymerizable agents and (ii) inhibition of corroding areas due to the presence of corrosion inhibitors [32,33]. Usually, the self-healing agent is released because of mechanical damage.…”

Section: Self-healing Coatings By Sol-gel Methodsmentioning

confidence: 99%

Surface Science Engineering through Sol-Gel Process

Carrera‐Figueiras¹,

Pérez‐Padilla²,

Estrella‐Gutiérrez³

et al. 2019

Applied Surface Science

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Sol-gel synthesis is used to obtain coatings that can modify the surfaces of metals to avoid corrosion or to enhance the biocompatibility and bioactivity of metals and their alloys that are of biomedical interest. Anticorrosion coatings composed of smart coatings and self-healing coatings will be described. TiO 2 , hydroxyapatite, bioglass, and hybrid coatings synthetized by sol-gel technology will be briefly introduced with regard to their role in surface-modifying metals for biomedical purposes. Finally, although there are other approaches to surface-modifying metals for either anticorrosion or biomedical purposes, sol-gel methods have several advantages in controlling surface chemistry composition and functionality.

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Section: Self-healing Coatings By Sol-gel Methodsmentioning

confidence: 99%

Surface Science Engineering through Sol-Gel Process

Carrera‐Figueiras¹,

Pérez‐Padilla²,

Estrella‐Gutiérrez³

et al. 2019

Applied Surface Science

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“…Inhibitors are substances added in relatively low concentrations on the metal surface. The high corrosion inhibition activities of chromate and leadbased [5] inhibitors, such as molybdates [6], organic thioglycolates [7], and phosphonates [8], make them one of the most effective types of commercial corrosion inhibitors available today. Despite its efficacy, the inclusion of highly toxic chromate-and lead-based compounds in the formulation of corrosion inhibitors make it an environmental and health hazard [9].…”

Section: Introductionmentioning

confidence: 99%

Rice Hull Ash Nanosilica: Characterization and Its Potential as Silicate Coating for Carbon Steel

Madlangbayan¹

2023

GEOMATE

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Corrosion of steel structures is one of the main causes of destruction and loss of materials due to the damages it can bring to operating, storage, and structural equipment. Anti-corrosion inhibitors available in the market frequently contain chromium and lead, which are hazardous to human health and the environment. This study focused on the synthesis of nanosilica from the agro-industrial byproduct rice hull ash (RHA) and examined its potential as a corrosion barrier. Steel specimens were prepared in the form of 4mm thick disks cut from 16mm steel bars. RHA nanosilica was synthesized via acid precipitation method and characterized using x-ray diffraction (XRD), dynamic light scattering (DLS), atomic force microscopy (AFM), and Fourier Transform Infrared (FTIR) Spectroscopy. After characterization, 2.5%w/v RHA nanosilica was used to formulate sodium silicate as a coating for the steel specimens. The coated specimens were then subjected to Complex Impedance Spectroscopy (CIS) at 20Hz to 20MHz frequency range. The generated Nyquist plot showed that the specimen coated with sodium silicate with RHA nanosilica has a much larger diameter than red oxide indicating better protection against corrosion. The generated Bode plots confirmed this result as it showed that the specimens coated with sodium silicate with RHA nanosilica had higher impedances than those coated with red oxide, especially in the low-frequency regions.

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“…In addition, fracture experiments yielded as much as 75% recovery in toughness. Since then, researchers have developed various microcapsule-type self-healing materials such as epoxy resin, 16 polydimethylsiloxane 17 glycidyl methacrylate 18,19 and tung oil. 20 Moreover, most self-healing materials are repaired usually when triggered by force, 21 thermal initiation, 16,22 photoinitiation [23][24][25] or pH.…”

Section: Introductionmentioning

confidence: 99%