Sol–gel derived hybrid coatings as an environment friendly surface treatment for corrosion protection of metals and their alloys

Balgude, Dinesh; Sabnis, Anagha

doi:10.1007/s10971-012-2838-z

Cited by 117 publications

(62 citation statements)

References 78 publications

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“…The sol-gel process to produce hybrid coatings, compared to other methods, has several advantages. This process is often classified as a "green" technology since it uses compounds that do not introduce impurities into the end product (e.g., ceramic processing), is waste-free, excludes the stage of washing, and the processing temperature is generally low, frequently close to room temperature [19]. Additionally, materials with high specific porosity and specific surface area can be easily obtained by this method, which also allows the incorporation of substances, such as inhibitors.…”

Section: General Background Of Sol-gel Coatings For Corrosion Mitigationmentioning

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: General Background Of Sol-gel Coatings For Corrosion Mitigationmentioning

confidence: 99%

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

et al. 2016

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“…Careful selection of a hybrid coating allows combining the desirable properties of organic part of system, i.e., toughness and elasticity with those of inorganic phase that is characteristic of good hardness, chemical resistance and adhesion to the metal substrate via formation of covalent bonds [16]. They offer an excellent adhesion to metal as well as to the subsequent coat via strong covalent bond and a three dimensional network of -Si-O-Si-linkages which helps to retard the penetration of corrosive medium through the coating [17]. Hybrid coating increase the thermal, UV resistance and the mechanical properties [18].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Polyurethane/Silica Modified Epoxy Polymer Based on 1,3-Propanediol for Coating Application

et al. 2017

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Synthesis of polyurethane/silica modified epoxy polymer using 1, 3-propanediol ABSTRAK Polimer epoksi termodifikasi poliuretan/silica telah disintesis dengan menggunakan bahan dasar 1,3-propanadiol. Sintesis dilakukan dengan mereaksikan senyawa tolonat dan 1,3-propanadiol (rasio berat NCO/OH = 2,5/1) sebagai bahan penyusun poliuretan dengan epoksi diglisidil eter bisfenol A (DGEBA) disertai penambahan katalis dibutiltin dilaurat (DBTL), dimana penambahan poliuretan sebesar 20% (b/b) terhadap berat epoksi. Berdasarkan spektra dari Fourier Transform Infrared (FTIR) dan 1 H-Nuclear Magnetic Resonance ( 1 HNMR) ditunjukkan adanya ikatan baru yang terbentuk dari hasil reaksi gugus isosianat dan gugus hidroksi, yang mana gugus hidroksi ini berasal dari epoksi dan 1,3-propanadiol. Penambahan silika (5, 10, dan 15% b/b terhadap berat epoksi) ke dalam epoksi termodifikasi poliuretan dilakukan melalui reaksi sol gel tetraetil ortosilikat (TEOS

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“…This extraction process results in thermodynamically unstable state to the metals when metals try to revert to the oxide form by chemical or electrochemical reactions. With this process metals want to attain stability i.e., they tend to corrode [1,2]. Corrosion is the process by which metals lose their useful properties.…”

Section: Introductionmentioning

confidence: 99%

“…These organosilanes coatings can offer good corrosion protection to a number of substrates, like aluminium, copper, steel etc. and has become and effective and environment friendly surface protective system [1,4,5,6].…”

Section: Introductionmentioning

confidence: 99%

Application of Chemical Pre-Treatment on the Polished Surface of Aluminium Alloys

Kraus¹,

Svobodová²,

Cais³

et al. 2016

Adv. Sci. Technol. Res. J.

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This paper reports the preparation and characterization of thin transparent nanolayers with phase composition ZrF 4 and different modification of SiO 2 with special focus on affecting the surface roughness of the material and the way of exclusion of the thin nanolayer on the surface of the polished aluminium material. The thin nanolayer was prepared by the sol-gel method. The final treatment based on PTFE was applied on the surface of some samples. This treatment is suitable for increasing wear resistance. The films were characterized with help of SEM microscopy and EDS analysis. The surface roughness was measured with classical surface roughness tester. The results on this theme have already published but not on the polished surface of the aluminium material. The results from the experiment show the problems with application of these nanolayers because a cracks were found on the surface of the material and deformations of the layer after application of the PTFE final layer. The surface layer formation is discussed.

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Sol–gel derived hybrid coatings as an environment friendly surface treatment for corrosion protection of metals and their alloys

Cited by 117 publications

References 78 publications

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

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

Synthesis of Polyurethane/Silica Modified Epoxy Polymer Based on 1,3-Propanediol for Coating Application

Application of Chemical Pre-Treatment on the Polished Surface of Aluminium Alloys

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