Hollow mesoporous silica nanoparticles loaded with phosphomolybdate as smart anticorrosive pigment

Zea, C.; Barranco‐García, Rosa; Alcántara, J.; Chico, Belén; Morcillo, M.; Fuente, Daniel de la

doi:10.1007/s11998-017-9924-7

Cited by 31 publications

(21 citation statements)

References 42 publications

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“…This method has already been used to analyze the performance of epoxy conventional liquid systems 13,14,39,40 , as well as other types of organic coatings 41,42 . In addition, some authors have obtained better corrosion resistance results when studying the effect of nanoadditions in different polymer matrixes [41][42][43][44] . However, no literature was found pertaining to the use of SKP to study the cathodic delamination of powder organic coatings.…”

Section: Introductionmentioning

confidence: 99%

Corrosion Protection in Chloride Environments of Nanosilica Containing Epoxy Powder Coatings with Defects

Fernández-Álvarez

Velasco

Bautista

et al. 2020

J. Electrochem. Soc.

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This paper describes the use of innovative, nanosilica containing epoxy powder coatings for the corrosion protection of steel. Two types of nanosilica particles (hydrophilic -HL-and hydrophobic -HB-) were mixed by ball milling with the powders (0.75 wt.%). The adequate homogeneity and embedding of nanoparticles were verified by transmission electron microscopy.The corrosion performance of the coatings as-received, and with HL and HB additions, were analyzed in 3.5 wt.% NaCl solutions. The mechanism and rate of delamination of defective coatings under drops simulating atmospheric conditions were analyzed by Scanning Kelvin Probe measurements for 30 days. The results show that the corrosion attack progresses through a cathodic delamination mechanism. Besides, fully-immersed samples, with and without defects, were monitored by electrochemical impedance spectroscopy. In defective coatings under these conditions, the occurrence of anodic undermining is proved. The results obtained reveal that the corrosion driven coating failure is delayed in the case of the epoxy coatings containing nanosilica. This delay is larger in the case of HB additions than HL additions in both atmospheric and immersion conditions. The corrosion mechanism observed is dependent upon exposure conditions. It is proposed that the nanoparticles delay water absorption, thus delaying corrosion attack.

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Section: Introductionmentioning

confidence: 99%

Corrosion Protection in Chloride Environments of Nanosilica Containing Epoxy Powder Coatings with Defects

Fernández-Álvarez

Velasco

Bautista

et al. 2020

J. Electrochem. Soc.

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“…Some of them can be used to form the superhydrophobicity surface [48,49,[54][55][56][57][58][59]61]. The coatings can also contain anticorrosive pigments, for example, lanthanum molybdate [62] or sodium phosphomolybdate [63], or anticorrosive coating additives like multiwalled carbon nanotubes [64]. To get the best protection against corrosion as well the optimal economy coatings and cathodic protection can be complementary used [44].…”

Section: Corrosion Protection Methodsmentioning

confidence: 99%

Organic Corrosion Inhibitors

Brycki¹,

Kowalczyk²,

Szulc³

et al. 2018

Corrosion Inhibitors, Principles and Recent Applications

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Organic corrosion inhibitors are one of the five ways, besides material selection, design, cathodic protection and coatings, to protect materials against corrosion. Corrosion is an ubiquitous phenomena that deteriorates all materials, metals, plastics, glass and concrete. The costs of corrosion are tremendous and amounts to 4.0% of gross domestic product (GDP) in USA. The similar losses of GDP are noted in all countries around the world. At this point of time, there is no way to completely stop the corrosion processes. Some new solutions can only slow this process. Organic corrosion inhibitors are widely used in industry because of their effectiveness at wide range of temperatures, compatibility with protected materials, good solubility in water, low costs and relatively low toxicity. Organic corrosion inhibitors adsorb on the surface to form protective film which displace water and protect it against deteriorating. Effective organic corrosion inhibitors contain nitrogen, oxygen, sulfur and phosphorus with lone electron pairs as well can contain structural moieties with π-electrons that interact with metal favoring the adsorption process. This review presents mechanisms and monitoring of corrosion, laboratory methods for corrosion study, relationship between structure and efficacy of corrosion inhibitions, theoretical approach to design new inhibitors and some aspects of biocorrosion.

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“…For example, layer-by-layer (LbL) deposition of polyelectrolytes is a largely used approach. 68,[142][143][144][145][146][147][148] Skorb et al 143 developed a pH sensitive polyelectrolyte shell made by a deposition of alternate layers of polyethyleneimine (PEI) and poly(sodium 4-styrenesulfonate) (PSS), enwrapping the corrosion inhibitor 2-(benzothiazol-2-ylsulfanyl)-succinic acid (BYS) into the MSN pores. They also developed a laser-driven release of BTA from MSN coated with the same polyelectrolyte shell.…”

Section: Organically Coated Msnmentioning

confidence: 99%

Mesoporous silica nanoparticles as carriers of active agents for smart anticorrosive organic coatings: a critical review

et al. 2021

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Hollow mesoporous silica nanoparticles loaded with phosphomolybdate as smart anticorrosive pigment

Cited by 31 publications

References 42 publications

Corrosion Protection in Chloride Environments of Nanosilica Containing Epoxy Powder Coatings with Defects

Corrosion Protection in Chloride Environments of Nanosilica Containing Epoxy Powder Coatings with Defects

Organic Corrosion Inhibitors

Mesoporous silica nanoparticles as carriers of active agents for smart anticorrosive organic coatings: a critical review

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