Microbe-induced pitting of Fe-based amorphous coating

Zhang, Lingyu; Zhang, Zhanrong; Chen, Qi; Zhang, Cheng; Liu, Lin

doi:10.1016/j.intermet.2023.107824

Cited by 8 publications

(2 citation statements)

References 40 publications

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“…It has been reported that the Fe 43.7 Co 7.3 Cr 14.7 Mo 12.6 C 15.5 B 4.3 Y 1.9 amorphous coating exhibits unsatisfactory and poor antifouling performance in a biological atmosphere . This is because the marine algae, e.g., Nitzschia closterium f. minutissima, and bacterium, e.g., Pseudomonas aeruginosa, tended to attach with the amorphous coating and develop a biofilm, resulting in deteriorated biofouling and reduced corrosion resistance . Therefore, endowing amorphous coatings with an antifouling functionality has remained a significant challenge.…”

Section: Introductionmentioning

confidence: 99%

Hydrogel-Anchored Fe-Based Amorphous Coatings with Integrated Antifouling and Anticorrosion Functionality

Zhang

Feng

Zhu

et al. 2023

ACS Appl. Mater. Interfaces

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Biofouling and corrosion of underwater equipment induced by marine organisms have become major issues in the marine industry. The superior corrosion resistance of Fe-based amorphous coatings makes them suitable for marine applications; however, they have a poor antifouling ability. In this work, a hydrogel-anchored amorphous (HAM) coating with satisfactory antifouling and anticorrosion performance is designed, utilizing an interfacial engineering strategy involving micropatterning, surface hydroxylation, and a dopamine intermediate layer to increase the adhesion strength between the hydrogel layer and the amorphous coating. The as-obtained HAM coating exhibits exceptional antifouling properties, achieving 99.8% resistance to algae, 100% resistance to mussels, and excellent biocorrosion resistance against Pseudomonas aeruginosa. Antifouling and anticorrosion performance of the HAM coating was also explored by conducting a marine field test in the East China Sea, and no signs of corrosion and fouling are observed after 1 month of immersion. It is revealed that the outstanding antifouling properties stem from the killing−resisting−camouflaging trinity that resists organism attachment across different length scales, and the excellent anticorrosion performance originates from the remarkable barrier of the amorphous coating against Cl − ion diffusion and microbe-induced biocorrosion. This work presents a novel methodology for designing marine protective coating with excellent antifouling and anticorrosion properties.

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Section: Introductionmentioning

confidence: 99%

Hydrogel-Anchored Fe-Based Amorphous Coatings with Integrated Antifouling and Anticorrosion Functionality

Zhang

Feng

Zhu

et al. 2023

ACS Appl. Mater. Interfaces

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“…Research that has been done in recent years focuses on the process of how to make amorphous Fe-based coatings [4,5]. It is stated in the literature that selective laser welding (SLM), and thermal spraying processes are instrumental methods for preparing Fe-based amorphous coatings due to fast solidification speed, high deposition rate, and low cost [6]. Despite its advantages, the thermal spraying technique is limited in its application in this field due to limitations such as the high porosity of the coating and low bond strength between the coating and the substrate [7].…”

Section: Introductionmentioning

confidence: 99%

The effect of ultrasonic field on the microstructure and corrosion behavior of Fe-based amorphous coating applied to selective laser melting

Taheri

Razavi

2023

Mater. Res. Express

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This study was conducted to investigate the effect of the ultrasonic field on the preparation of amorphous/crystalline Fe-based coatings. For this purpose, Fe86.3Si 5.9B3.2Cr4.6 (wt.%) powder was deposited on GTD-111 superalloy substrate with and without ultrasonic field by selective laser melting method. After coating, the corrosion behavior, microstructure, and hardness of the amorphous coating were investigated. The results showed that in conditions without ultrasonic vibration, the growth of grains starts in columnar form. At the same time, the use of an ultrasonic field inhibits columnar growth and creates equiaxed grains. In addition, the ultrasonic field increased the amorphous phase by 34.5%. This is attributed to the increased solidification rate caused by the cavitation effect. The experimental results of corrosion show that the self-corrosion current density of 6.83×10-7 A⋅cm2 is obtained due to the refinement of the microstructure and the increase of the amorphous phase. The wear results showed that the increase in the amorphous phase, as well as the decrease in the grain size, reduction in the grain ratio, and the increase in the tendency to equiaxed grains when using the ultrasonic field, reduce the coefficient of friction by 97%.

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Passive Film Properties Evolution Involving Oxygen Vacancies Transportation of FeCrMoCBY Amorphous/Nanocrystalline Composite Coating with Different Solution Temperatures

Wang,

Zhou,

et al. 2023

J Therm Spray Tech

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Microbe-induced pitting of Fe-based amorphous coating

Cited by 8 publications

References 40 publications

Hydrogel-Anchored Fe-Based Amorphous Coatings with Integrated Antifouling and Anticorrosion Functionality

Hydrogel-Anchored Fe-Based Amorphous Coatings with Integrated Antifouling and Anticorrosion Functionality

The effect of ultrasonic field on the microstructure and corrosion behavior of Fe-based amorphous coating applied to selective laser melting

Passive Film Properties Evolution Involving Oxygen Vacancies Transportation of FeCrMoCBY Amorphous/Nanocrystalline Composite Coating with Different Solution Temperatures

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