Exploration of Mo incorporated TiO2 composite for sustained biocorrosion control on zinc coating

Deepa, M.; Arunima, S.R.; Riswana, G.; Riyas, A.; Sha, M. Ameen; Suneesh, Chettiyam Veettil; Shibli, S.M.A.

doi:10.1016/j.apsusc.2019.07.086

Cited by 19 publications

(51 citation statements)

References 81 publications

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“…When zinc oxide concentration is 5g/L, voltage is 7.2-9.2V, current is 1A, the result of coating thickness is 5-12um and cathode mass increase 0.35-0.76g, anode reduction is 0.42-0.82g. The calculation formulas of power and electrical work are shown in equations ( 4) and (5). As shown in table 2, at 10V startup voltage, the coating thickness increases with the increase of zinc oxide concentration and current density.…”

Section: Influence Of Zinc Oxide Concentration On Electroplatingmentioning

confidence: 99%

“…It is widely used in various fields of national economy such as metallurgy, building materials, electric power, transportation and agriculture [1]. The methods of galvanizing steel surface include cold spraying zinc [2][3] and hot dip galvanizing [4][5][6][7]. Both of them make zinc atoms penetrate between the atomic lattices of metal materials through physical and chemical methods to form the structure of eutectic phase, thus enabling the material to have special functions, such as electrical conductivity, thermal conductivity, superhardness, wear resistance, anticorrosion and other properties.…”

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Study on Electrogalvanizing Technology and Chromium-Free Passivation Treatment of 08Al Plate

Chen

2022

J. Phys.: Conf. Ser.

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An environment-friendly electrogalvanizing technology of 08Al cold rolled steel sheet (CRS) was developed. 08Al CRS sheet was placed as cathode in the electroplating solution containing zinc salt 1-10g/L, organic acid 3-24g/L, complexing agent 0.2-0.8g/L, and Hot-dip galvanized alloyed sheet (GA) as anode. The relationship between the current density and the plating mass per unit area was studied by applying 0.15-2A direct current at room temperature, current density 0.19-2.6A/dm2, and plating time 35min. The relationship between plating mass per unit area and anode thinning per unit area was linear regression by introducing current density as intermediate quantity. The effect of electric power range on the coating mass per unit area was studied under the condition of different concentration of main salt. The chromium-free passivation treatment was also carried out on the surface of electrogalvanizing layer. 08Al electrogalvanized sheet and GA sheet were placed in chromium-free passivation solution containing molybdate 1-10g/L, hydrogen peroxide 1-5g/L, fluorine ion complexing agent 1-10g/L, potassium hydroxide 1-2g/L. The temperature and reaction time of chromium-free passivation solution and the corrosion resistance of chemical conversion film were studied, and the experimental conditions of chromium-free passivation were optimized. The adhesion and corrosion resistance of the coating were tested by scratching test and neutral salt spray test (NSS). The results show that after scratching test, the adhesion of the electrogalvanizing layer on 08Al surface reaches grade 0, and the adhesion of the electrogalvanizing and chemical conversion film composite coating on 08Al surface reaches grade 0. The NSS test showed that the corrosion resistance increased with the increase of the thickness of the galvanizing layer. The corrosion resistance time of the galvanizing layer with the thickness of 15um exceeded 216h. Salt spray resistance time of electric galvanizing layer about 10um is 72-96 h; The salt spray resistance time of electrogalvanizing layer less than 5um is less than 48 h. The salt spray corrosion time of GA plate (galvanized layer thickness is 10-11um) is less than 96 h. After chromium-free passivation treatment, the corrosion resistance of GA plate is more than doubled to 192h. The salt spray corrosion resistance of the composite coating (10-11um thickness) on 08Al with electrogalvanizing and chemical conversion film can reach more than 216h.

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Section: Influence Of Zinc Oxide Concentration On Electroplatingmentioning

confidence: 99%

mentioning

confidence: 99%

Study on Electrogalvanizing Technology and Chromium-Free Passivation Treatment of 08Al Plate

Chen

2022

J. Phys.: Conf. Ser.

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“…Another strategy involves the combination of corrosion inhibitors (molybdates or zinc oxide) and biocides inside coatings. [60][61][62][63][64] Corrosion mitigation occurred due to the formation of a passive layer of metal oxide at solution/metal interfaces while the antibiofouling performance was attributed to the lethal effect of metal ions and biocides on marine organisms.…”

Section: Introductionmentioning

confidence: 99%

Adaptive Coatings with Anticorrosion and Antibiofouling Properties

Yimyai

Thiramanas

Phakkeeree

et al. 2021

Adv Funct Materials

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Biofouling on surfaces immersed in aquatic environment induces catastrophic corrosion of metallic materials in petrochemical infrastructures, maritime facilities, and power plants. To combat the synergistic effect of biofouling and corrosion on the deterioration of metallic materials, smart coatings possessing a dual function of antibiofouling and anticorrosion properties are needed. Herein, redox‐responsive copolymer conjugates are synthesized and employed as coatings with the dual function of biofouling and corrosion mitigation. The dual function of copolymers is attributed to fluorinated units and the corrosion inhibitor 2‐mercaptobenzothiazole (MBT) conjugated via disulfide linkages. Indeed, the disulfide linkages can be cleaved in a reducing environment, yielding controlled release of the corrosion inhibitor MBT during corrosion process. The antibiofouling action against protein adsorption and algal attachment is enabled by cooperation of the repellent characteristic of fluorinated moieties and the biocidal effect of conjugated MBT.

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“…Steels are extensively used in almost all industries due to their good mechanical properties, availability, recyclability, flexibility, economic viability, and constructability. − Mild steels are frequently used in the fabrication of reaction vessels, storage tanks, and petroleum refineries . However, the performance of mild steel is affected by corrosion.…”

Section: Introductionmentioning

confidence: 99%

“…Corrosion of metal surfaces is a severe threat to many industries, which challenges the world economy. Therefore, the corrosion of metals has received significant attention. , Especially, mild steel is affected by biocorrosion or microbially influenced corrosion due to the undesirable adhesion and colonization of various microorganisms on the steel surface, which causes the biodegradation or biodeterioration of metals. ,− Biocorrosion is a localized type of corrosion, and it is a serious threat to aquatic and marine industries, which causes vast global economic loss. , Therefore, it is of great significance to inhibit biofilm formation on the steel surface for combating biocorrosion in aquatic and marine environments.…”

Section: Introductionmentioning

confidence: 99%

Development of Antibacterial V/TiO₂-Based Galvanic Coatings for Combating Biocorrosion

Deepa

Arunima

Elias

et al. 2021

ACS Appl. Bio Mater.

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Recently, TiO2 crystals have been modified by transition-metal dopants with different physicochemical structures to attain distinguished properties. Considering the similar ionic sizes of V4+ (0.058 nm) and Ti4+ (0.061 nm), vanadium in the +4 state can be effectively incorporated into the crystal lattice of TiO2 to tune the band gap energy by creating an impurity energy level (V5+/V4+) below the conduction band (2.1 eV) and retaining the anatase phase. In vanadium-incorporated TiO2 (V/TiO2), V4+ is a good dopant candidate as it can increase the lifetime of the charge carrier and reduce the electron–hole recombination rate, which results in high antibacterial activity under visible light irradiation. The present study explores the V/TiO2-based hot-dip zinc coating with enhanced electrochemical properties and long-term stability for combating biocorrosion. All the composites and the coatings are characterized by different techniques, including X-ray diffraction, transmission electron microscopy, field emission scanning electron microscopy, energy-dispersive X-ray analysis, confocal laser scanning microscopy, optical surface profilometry, and X-ray photoelectron spectroscopy. The biofilm formation assay and the cell viability assay reveal that the tuned composition of the V/TiO2-based hot-dip zinc coating effectively kills the adherent bacteria and inhibits biofilm formation on the surface. The high-charge-transfer resistance (225.67, 223.63, and 242.35 Ω cm2) and the high-inhibition efficiency (92.24, 92.30, and 92.02%) of the tuned composition of the V/TiO2-based hot-dip zinc coating confirm its efficient and sustainable antibiocorrosion performance and long-term stability even after an exposure period of 21 days in different bacterial environments. With the inherent antibacterial properties and antibiocorrosion performance of the developed V/TiO2-based hot-dip zinc coating, the mild steel substrates can find potential application in different fields, including aquatic and marine environments.

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Exploration of Mo incorporated TiO2 composite for sustained biocorrosion control on zinc coating

Cited by 19 publications

References 81 publications

Study on Electrogalvanizing Technology and Chromium-Free Passivation Treatment of 08Al Plate

Study on Electrogalvanizing Technology and Chromium-Free Passivation Treatment of 08Al Plate

Adaptive Coatings with Anticorrosion and Antibiofouling Properties

Development of Antibacterial V/TiO₂-Based Galvanic Coatings for Combating Biocorrosion

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Exploration of Mo incorporated TiO2 composite for sustained biocorrosion control on zinc coating

Cited by 19 publications

References 81 publications

Study on Electrogalvanizing Technology and Chromium-Free Passivation Treatment of 08Al Plate

Study on Electrogalvanizing Technology and Chromium-Free Passivation Treatment of 08Al Plate

Adaptive Coatings with Anticorrosion and Antibiofouling Properties

Development of Antibacterial V/TiO2-Based Galvanic Coatings for Combating Biocorrosion

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Product

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Development of Antibacterial V/TiO₂-Based Galvanic Coatings for Combating Biocorrosion