Corrosion behavior of Zr-based metallic glass coating on type 304L stainless steel by pulsed laser deposition method

Ningshen, S.; Mudali, U. Kamachi; Krishnan, R.; Raj, Baldev

doi:10.1016/j.surfcoat.2011.02.039

Cited by 32 publications

(11 citation statements)

References 34 publications

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“…The conversion of the precursors into OIH materials proceeds via the formation of siloxane (Si-O-Si) bonds. This process takes place by hydrolysis of monomeric tetrafunctional alkoxide precursors that can be catalyzed by an acid (e.g., HCl) or alkaline compound (e.g., NH 3 ).Several studies have shown [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] that the mechanical, thermal and electrical properties of OIH materials obtained by sol-gel methods based on siloxanes are interesting and as such, these materials can be used as pre-treatments to improve the corrosion resistance of several metals and alloys.The combination of functionalized siloxanes and polymeric structures is a route to produce homogeneous OIH materials with enhanced properties. This is due to their capacity to host chemical species with distinct properties within the produced matrix.…”

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confidence: 99%

Alcohol-Aminosilicate Hybrid Coatings for Corrosion Protection of Galvanized Steel in Mortar

Figueira¹,

Silva²,

Pereira³

et al. 2014

J. Electrochem. Soc.

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Organic-inorganic hybrid (OIH) matrices were synthesized by sol-gel method and deposited on hot-dip galvanized steel (HDGS) using a dip-coating process. These OIHs, generally called amino-alcohol-silicates, were synthesized using a functionalized siloxane, 3-glycidoxypropyltrimethoxysilane, and five oligopolymers (Jeffamine) with different molecular weights: 230, 400, 600, 900 and 2000. Besides the five different pure OIH matrix coatings, a similar set of HDGS samples were coated with the OIH matrices doped with Cr(III), which was tested as a corrosion inhibitor. The OIH coatings were assessed using electrochemical studies, namely electrochemical impedance spectroscopy, macrocell current density, open circuit potential monitoring and polarization resistance. The studies were carried out in mortar. Analysis of the results obtained by optical and scanning electronic microscopy methods were consistent with the data obtained by electrochemical techniques. The HDGS samples coated with OIH matrices showed better performance when compared with HDGS uncoated samples. During the last three decades, the corrosion of steel reinforcement has been widely studied and reported. [1][2][3][4][5][6][7] In spite of the majority of the reinforced concrete (RC) structures showing high durability, serviceability and long-term performance as well as intense research being performed in the last few years, a large number of failures have been reported due to the corrosion of the reinforcement embedded in the concrete.The most effective way to minimize the risk of corrosion reinforcement concrete is to ensure that the cover of the metallic reinforcement parts is of an adequate thickness. The concrete should be of high quality, with a proper mixing ratio, good compaction and curing. 1,6,7 Several proven methods are known for preventing and controlling corrosion. Improving the concrete quality and increasing the concrete cover are the most economical protection measures yet are not always enough. A method that is widely accepted and recognized as efficient at providing corrosion protection of the RC structures is the application of hot-dip galvanized steel (HDGS), since it is considered economically favorable when compared to others. The use of HDGS has been recognized by several authors 7,[8][9][10][11][12] as an effective measure to increase the service life of RC structures exposed to carbonation or to chloride ions. However, zinc in contact with fresh concrete (high alkaline environment) is oxidized and hydrogen evolution occurs, for a limited period, until passivating formation layers occur and concrete hardens. To avoid zinc corrosion and hydrogen evolution, chromate and similar hexavalent chromium compounds are among the most common substances used as inhibitors or incorporated into the preparation of the fresh concrete. However, these compounds are toxic and carcinogenic, causing serious environmental hazards and their incorporation in protective coatings is heavily regulated by most environmental legislation. Therefore, intense re...

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confidence: 99%

Alcohol-Aminosilicate Hybrid Coatings for Corrosion Protection of Galvanized Steel in Mortar

Figueira¹,

Silva²,

Pereira³

et al. 2014

J. Electrochem. Soc.

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“…It can be seen from Table 2 that the tendency of corrosion current density I corr is I corr/HCl > I corr/HNO3 > I corr/NaCl > I corr/H2SO4 . The Zr-MG reveals to increase in passive current density and decrease of transpassive potential with increase in nitric acidic concentration [51]. Gebert et al [50,55] Table 2.…”

Section: Effect Of Environmentmentioning

confidence: 99%

Corrosion Resistance and Electrocatalytic Properties of Metallic Glasses

Wang¹

2016

Metallic Glasses - Formation and Properties

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Metallic glasses exhibit excellent corrosion resistance and electrocatalytic properties, and present extensive potential applications as anticorrosion, antiwearing, and catalysis materials in many industries. The effects of minor alloying element, microstructure, and service environment on the corrosion resistance, pitting corrosion, and electrocatalytic efficiency of metallic glasses are reviewed. Some scarcities in corrosion behaviors, pitting mechanism, and eletrocatalytic reactive activity for hydrogen are discussed. It is hoped that the overview is beneficial for some researcher paying attention to metallic glasses.

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“…The OIHs represent a new class of materials characterised by a biphasic morphology consisting of distinct organic and inorganic domains at a nanometric level [16][17][18][19][20]. The inorganic and organic components may be partially or totally linked through covalent or Lewis acid-base bonds.…”

Section: Introductionmentioning

confidence: 99%

Hybrid sol–gel coatings for corrosion protection of hot-dip galvanized steel in alkaline medium

Figueira

Silva

Pereira

2015

Surface and Coatings Technology

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Corrosion behavior of Zr-based metallic glass coating on type 304L stainless steel by pulsed laser deposition method

Cited by 32 publications

References 34 publications

Alcohol-Aminosilicate Hybrid Coatings for Corrosion Protection of Galvanized Steel in Mortar

Alcohol-Aminosilicate Hybrid Coatings for Corrosion Protection of Galvanized Steel in Mortar

Corrosion Resistance and Electrocatalytic Properties of Metallic Glasses

Hybrid sol–gel coatings for corrosion protection of hot-dip galvanized steel in alkaline medium

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