SiO2 based hybrid inorganic–organic films doped with TiO2–CeO2 nanoparticles for corrosion protection of AA2024 and Mg-AZ31B alloys

Zaharescu, Maria; Predoană, Luminița; Barau, A.; Raps, D.; Gammel, F.; Rosero-Navarro, Nataly Carolina; Castro, Yolanda; Durán, Alicia; Aparicio, Mario

doi:10.1016/j.corsci.2009.05.022

Cited by 81 publications

(43 citation statements)

References 32 publications

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“…Lanthanides ions, benzotriazoles, 8-hydroxyquinoline, propargyl alcohol or red mud (waste from the production of aluminium by the Bayer method, consisting of iron and titanium oxides and silicon compounds) is commonly used for this purpose [85,[93][94][95][96][97]. Also, hybrid coatings are produced [82,85,91,92,[98][99][100]. The inorganic groups form covalent bonds with the native oxide film present on the metallic substrate, whilst the organic groups contact the painting systems.…”

Section: Hybrid Oxide Coatingsmentioning

confidence: 99%

Self-healing coatings in anti-corrosion applications

2013

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Nonmetallic (based on polymers or oxides) and metallic protective coatings are used to protect metal products against the harmful action of the corrosion environment. In recent years, self-healing coatings have been the subject of increasing interest. The ability of such coatings to self-repair local damage caused by external factors is a major factor contributing to their attractiveness. Polymer layers, silica-organic layers, conversion layers, metallic layers and ceramic layers, to mention but a few, are used as self-healing coatings. This paper presents the main kinds of self-healing coatings and explains their selfhealing mechanisms.

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Section: Hybrid Oxide Coatingsmentioning

confidence: 99%

Self-healing coatings in anti-corrosion applications

2013

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“…Research has reported that the addition of nanoparticles helps to increase thickness of the films [5,9,27], and improve mechanical and barrier properties leading to corrosion resistance [6,7,12,28,29]. However, in order to develop high performance coatings with nano-additives, it is important to incorporate an optimum loading level of nanoparticles with the appropriate surface chemistry to provide good compatibility and dispersion in the base coating matrix.…”

Section: Introductionmentioning

confidence: 99%

Influence of silica nanoparticles on corrosion resistance of sol-gel based coatings on mild steel

Mora

Naik

Paul

et al. 2017

Surface and Coatings Technology

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Abstract:For this study, unfunctionalised and functionalised nanoparticles of silica (SiO2) were incorporated into a sol-gel based matrix in an effort to provide more effective corrosion protection on a mild steel substrate. Tests such as atomic force microscopy (AFM) and white light interferometry (WLI) were carried out to characterise coating microstructure and properties. Corrosion protection and coating durability was investigated using differe nt methods which included electrochemical impedance spectroscopy (EIS) and accelerated salt spray testing to simulate a marine environment. Electrochemical test results as well as results after exposure in the neutral salt spray test indicated that the addition of silica nanoparticles led to an improvement in corrosion resistance of the coating matrix. The most effective performance was observed when the nanoparticles were functiona lised. Nanoparticle functionalisation helped to avoid agglomeration during incorporation leading to a more unifo r m nanoparticle distribution within the coating formulation and an improvement of the coating's ability to protect against corrosion.2 Highlights:-The influence of silica (SiO2) nanoparticle incorporation in a sol-gel based coating was studied -SiO2 particle surface treatment improved coating homogeneity and prevented cracking propagation -Corrosion resistance improved with functionalised SiO2 nanoparticles

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“…Pepe et al [65] evaluated the presence of cerium ions in silica sol-gel coatings and the results clearly indicated that there is an inhibition of the corrosion by cerium salts which migrate thorough the coating to the site of the attack and then react to passivate the site. Another work based on the development of silica coatings doped with TiO 2 -CeO 2 nanoparticles is presented by Zaharescu et al [66]. In this work, the binary powder plays a dual key role in the resultant hybrid inorganic-organic films.…”

Section: Superhydrophobic Surfacesmentioning

confidence: 99%

Design of Nanostructured Functional Coatings by Using Wet-Chemistry Methods

et al. 2018

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This review reports the implementation of novel nanostructured functional coatings by using different surface engineering techniques based on wet chemistry. In the first section, the theoretical fundaments of three techniques such as sol-gel process, layer-by-layer (LbL) assembly and electrospinning will be briefly described. In the second section, selected applications in different potential fields will be presented gathering relevant properties such as superhydrophobicity, biocide behavior or applications in the field of optical fiber sensors.

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SiO2 based hybrid inorganic–organic films doped with TiO2–CeO2 nanoparticles for corrosion protection of AA2024 and Mg-AZ31B alloys

Cited by 81 publications

References 32 publications

Self-healing coatings in anti-corrosion applications

Self-healing coatings in anti-corrosion applications

Influence of silica nanoparticles on corrosion resistance of sol-gel based coatings on mild steel

Design of Nanostructured Functional Coatings by Using Wet-Chemistry Methods

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