Electrodeposition of sol–gel films on Al for corrosion protection

Sheffer, Mari; Groysman, Alec; Mandler, Daniel

doi:10.1016/s0010-938x(03)00106-9

Cited by 172 publications

(76 citation statements)

References 25 publications

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“…This shows better anticorrosive properties in comparison to hybrid sol-gel coatings based on non-functional organosilanes. Some other functional groups could be present, like phenyl [68,109], which is used to increase coatings hydrophobicity or phosphonate [55,110,111], which is used to improve bonding to the substrate. Therefore, the different organic groups are used to achieve tailored properties of the sol-gel coatings including compatibility with organic paints systems.…”

Section: Corrosion Protective Sol-gel Coatings In Aluminium Substratesmentioning

confidence: 99%

Hybrid Sol-Gel Coatings: Smart and Green Materials for Corrosion Mitigation

et al. 2016

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Corrosion degradation of materials and metallic structures is one of the major issues that give rise to depreciation of assets, causing great financial outlays in their recovery and or prevention. Therefore, the development of active corrosion protection systems for metallic substrates is an issue of prime importance. The promising properties and wide application range of hybrid sol-gel-derived polymers have attracted significant attention over recent decades. The combination of organic polymers and inorganic materials in a single phase provides exceptional possibilities to tailor electrical, optical, anticorrosive, and mechanical properties for diverse applications. This unlimited design concept has led to the development of hybrid coatings for several applications, such as transparent plastics, glasses, and metals to prevent these substrates from permeation, mechanical abrasion, and corrosion, or even for decorative functions. Nevertheless, the development of new hybrid products requires a basic understanding of the fundamental chemistry, as well as of the parameters that influence the processing techniques, which will briefly be discussed. Additionally, this review will also summarize and discuss the most promising sol-gel coatings for corrosion protection of steel, aluminium, and their alloys conducted at an academic level.

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Section: Corrosion Protective Sol-gel Coatings In Aluminium Substratesmentioning

confidence: 99%

Hybrid Sol-Gel Coatings: Smart and Green Materials for Corrosion Mitigation

et al. 2016

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“…[1][2][3][4][5] There has been considerable focus on understanding their wettability 6,7 and developing them for a wide range of applications including droplet impact resistance, [8][9][10][11][12][13] anti-icing, [14][15][16][17][18][19] dropwise condensation, [20][21][22][23][24] electro-wetting, 25,26 drag reduction, [27][28][29][30][31][32] evaporation, 33,34 and anti-corrosion. [35][36][37][38] An important challenge for broad applicability of these hydrophobic materials is their limited robustness. 3,4,39 Most approaches for fabricating superhydrophobic surfaces involve texturing a polymeric hydrophobic material or coating a textured hydrophilic material with a polymeric hydrophobic modifier such as organosilanes or thiols.…”

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confidence: 99%

Role of surface oxygen-to-metal ratio on the wettability of rare-earth oxides

Khan

Azimi

Yildiz

et al. 2015

Applied Physics Letters

129

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Hydrophobic surfaces that are robust can have widespread applications in drop-wise condensation, anti-corrosion, and anti-icing. Recently, it was shown that the class of ceramics comprising the lanthanide series rare-earth oxides (REOs) is intrinsically hydrophobic. The unique electronic structure of the rare-earth metal atom inhibits hydrogen bonding with interfacial water molecules resulting in a hydrophobic hydration structure where the surface oxygen atoms are the only hydrogen bonding sites. Hence, the presence of excess surface oxygen can lead to increased hydrogen bonding and thereby reduce hydrophobicity of REOs. Herein, we demonstrate how surface stoichiometry and surface relaxations can impact wetting properties of REOs. Using X-ray Photoelectron Spectroscopy and wetting measurements, we show that freshly sputtered ceria is hydrophilic due to excess surface oxygen (shown to have an O/Ce ratio of ∼3 and a water contact angle of ∼15°), which when relaxed in a clean, ultra-high vacuum environment isolated from airborne contaminants reaches close to stoichiometric O/Ce ratio (∼2.2) and becomes hydrophobic (contact angle of ∼104°). Further, we show that airborne hydrocarbon contaminants do not exclusively impact the wetting properties of REOs, and that relaxed REOs are intrinsically hydrophobic. This study provides insight into the role of surface relaxation on the wettability of REOs.

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“…Metroke et al have reported 11% and 67% as optimum values of [mol GLYMO/(mol GLYMO + mol TEOS)] for corrosion protective GLYMO-TEOS hybrid coating applied using spray and dip-coating methods, respectively [22,31]. Moreover, the coating application method not only affects the OOIR but also the maximum achievable thickness of the hybrid sol-gel coatings [21,22,32,33].…”

Section: Passive Corrosion Protection By Sol-gel Coatingsmentioning

confidence: 99%

Routes to extrinsic and intrinsic self-healing corrosion protective sol-gel coatings: a review

Zadeh

Zwaag

García

2013

Self-Healing Materials

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Sol-gel pre-treatments and coatings are an important class of passive protective coatings, which can effectively prevent corrosion of various metallic substrates through adhesion improvement and barrier protection. Recently, sol-gel chemistry has been proposed as an appropriate method for implementation of self-healing functionality in coatings via extrinsic concepts. In this review we will analyze the most relevant existing works on self-healing sol-gel coatings, including new work done in the direction of implementing intrinsic healing capabilities to sol-gels. The development of active sol-gel coatings is due to the broad chemical versatility of precursors and low processing temperature of this type of chemistry.

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Electrodeposition of sol–gel films on Al for corrosion protection

Cited by 172 publications

References 25 publications

Hybrid Sol-Gel Coatings: Smart and Green Materials for Corrosion Mitigation

Hybrid Sol-Gel Coatings: Smart and Green Materials for Corrosion Mitigation

Role of surface oxygen-to-metal ratio on the wettability of rare-earth oxides

Routes to extrinsic and intrinsic self-healing corrosion protective sol-gel coatings: a review

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