Extrusion-free fabrication of zinc-rich powder coatings: Press bonding

Huang, Jinbao; Yang, Marshall Shuai; Zhu, Wenhao; Tang, Keyong; Zhang, Hui; Chen, Jian; Noël, James J.; Barker, I.; Zhang, Haiping; Zhu, Jianbo

doi:10.1016/j.cej.2022.135925

Cited by 13 publications

(4 citation statements)

References 44 publications

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“…Thus, the corrosion properties of these organic coatings depend mainly on the galvanic current flow between the zinc particles and the steel substrate. For this reason, the zinc content in such coatings must be very high, 80 to 93 wt.% [26][27][28][29]. However, metallic zinc protects the steel substrate electrochemically (cathodic protection) only in the first phase of its action.…”

Section: Introductionmentioning

confidence: 99%

New Azo Dyes-Based Mg Complex Pigments for Optimizing the Anti-Corrosion Efficiency of Zinc-Pigmented Epoxy Ester Organic Coatings

et al. 2023

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This work addresses the possibilities of using synthesized novel magnesium complex dyes in zinc pigmented organic coatings based on epoxyester resin to reduce the zinc content in these coatings while maintaining or increasing the anticorrosive efficiency of them. The magnesium complexes Mg-Dye-I (C34H26MgN8O6), Mg-Dye-II (C26H19MgN3O5), Mg-Dye-III (C17H10MgN2O3), and Mg-Dye-IV (C25H18MgN4O6) with a series of azo carboxylate ligands were prepared from the diazo-coupling reaction of anthranilic acid with 5-methyl-2-phenyl-3-pyrazolone (Dye I; C17H14N4O3), anthranilic acid with naphthol AS-PH (Dye II; C26H21N3O5), anthranilic acid with 2-naphthol (Dye III; C17H12N2O3), and 2-amino-5-nitrophenol with naphthol AS-PH (Dye IV; C25H20N4O6). The synthesized novel magnesium complex dyes were characterized by analytical methods. Model coatings containing these dyes at pigment volume concentrations (PVCs) = 1, 3, 5 and 10% and zinc at a ratio of pigment volume concentration/critical pigment volume concentration (PVC/CPVC) = 0.60 were formulated to study the inhibitory properties of the individual synthesized magnesium complex dyes. Model coatings containing inorganic pigments (MgO and Ca-Mg-HPO4) at PVCs = 1%, 3%, 5% and 10% and zinc at PVC/CPVC = 0.60 were also formulated. The coating pigmented only by zinc at PVC/CPVC = 0.60 was prepared as a standard organic coating. Corrosion resistance was also evaluated by potentiodynamic polarization studies and electrochemical impedance spectroscopy. The properties of organic coatings were also tested using other standardized and derived corrosion tests. In addition, the mechanical properties of the studied organic coatings were determined using standard tests. The aim of the work was to verify the possible synergistic efficiency of novel magnesium complex dyes by improving the mechanical, anti-corrosion, and chemical properties of zinc pigmented organic coatings.

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Section: Introductionmentioning

confidence: 99%

New Azo Dyes-Based Mg Complex Pigments for Optimizing the Anti-Corrosion Efficiency of Zinc-Pigmented Epoxy Ester Organic Coatings

et al. 2023

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“…Increasing the effectiveness of protection can be achieved by choosing the appropriate type of coating, taking into account the specific operating conditions of the equipment: type of metal being protected, weather and climatic conditions, corrosive components of an aggressive environment, probable mechanical impacts, etc. Considering the large length of oil trunk pipelines located in different climatic or soil conditions, safe oil pumping requires constant monitoring of the condition and increasing the degree of protection of equipment, pipelines and tank farms (Jinbao Huang et al, 2022;Kazakov & Grishina, 2022). In this regard, this article reflects work on comparing the protective properties of a two-component epoxy polyamide paint and varnish coating (hereinafter referred to as EPLP) and a zinc-rich paint and varnish coating (hereinafter referred to as TsLP) under operating conditions of electrochemical protection equipment for the purpose of possible use at production facilities.…”

Section: Introductionmentioning

confidence: 99%

Academic Research of the Protective Ability of Zinc-Filled and Epoxy Polyamide Paint Coatings against Atmospheric and Soil Corrosion

Duysembaev,

Sharipov,

Zhambakin

et al. 2023

Materials of International Practical Internet Conference “Challenges of Science”

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Currently, zinc-filled coatings capable of providing protection against corrosion through a barrier and tread mechanism are becoming increasingly widespread. When exposed to an aggressive environment, the coating prevents steel corrosion by “healing” the damage. In this way, the corrosion process slows down, and the by-products formed during the activation of zinc are able to fill the space left by the defect. The article presents a description of the principle of “healing” with such coatings, as well as the results of laboratory and field tests carried out in order to study data on the effectiveness of protective characteristics in comparison with the traditionally used epoxy polyamide coating with parallel operation of electrochemical protection. It was noted that laboratory tests confirmed the “restorative ability” of the zinc-filled coating to prevent the formation of corrosion in places of applied defects.

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“…The global cost of corrosion is estimated to be 3%-5% of the global gross domestic product (GDP), not including individual safety or environmental consequences. To reduce the corrosion cost and to avoid catastrophic corrosion consequences, abundant corrosion studies have been performed and effective corrosion control practices [18][19][20][21][22] have been used to understand the corrosion fundamentals, to inspect the corrosion performance of structural components or materials, to evaluate the safety issues, to analyze and report the corrosion failure, and to develop advanced corrosion control techniques. This benefits the selection and design of the corrosion-resistant materials used in modern society, and their safety assessment.…”

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confidence: 99%

“…With the great efforts of the Guest Editor team, the enthusiastic support of the Editorial Board and the valuable contribution of the participates, this Special Issue has reached a milestone, successfully publishing 31 peer-reviewed papers. It covers a series of research areas ranging from the microstructure characterization of the studied materials which has a great impact on their corrosion performance [11,12], the corrosion behaviors and mechanisms of the structural or novel-designed materials in potential service environments [13][14][15][16][17], the development of new coatings acting as corrosion barriers to protect the materials [18][19][20][21][22], the corrosion model built to predict the corrosion progress of the material investigated [23], and other related areas [24][25][26][27].…”

mentioning

confidence: 99%