Corrosion behavior of 316L stainless steel coatings on ZE41 magnesium alloy in chloride environments

García-Rodríguez, S.; Torres, B.; Pulido-González, N.; Otero, E.; Rams, J.

doi:10.1016/j.surfcoat.2019.124994

Cited by 29 publications

(10 citation statements)

References 37 publications

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“…EIS can separate the diffusion processes from other physico-chemical processes in a wide frequency spectrum, which has served as a powerful and routine tool in estimating the diffusion coefficient [ 20 , 21 ]. Previously, samples were cleaned and migrated from a corrosive environment to an electrochemical workstation after corrosion [ 22 , 23 ]. In this way, the corrosion frontier, namely the solution/metal (S/M) interface, was changed, and the new balance was reconstructed at the interface instead of the S/M interface in the original corrosive conditions.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Impedance Spectroscopy (EIS) Explanation of Single Crystal Cu(100)/Cu(111) in Different Corrosion Stages

et al. 2023

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Copper and its alloys are used widely in marine environments, and anisotropic corrosion influences the corrosion kinetics of copper. Corrosion of copper in an electrolyte containing Cl− is described as a dissolution–deposition process, which is a prolonged process. Therefore, it is laborious to clarify the corrosion anisotropy in different stages. In this paper, electrochemical impedance spectroscopy (EIS) following elapsed open circuit potential (OCP) test with 0 h (0H), 24 h (24H) and 10 days (10D) was adopted. To exclude interruptions such as grain boundary and neighbor effect, single crystal (SC) Cu(100) and Cu(111) were employed. After 10D OCP, cross-sectional slices were cut and picked up by a focused ion beam (FIB). The results showed that the deposited oxide was Cu2O and Cu(100)/Cu(111) experienced different corrosion behaviors. In general, Cu(100) showed more excellent corrosion resistance. Combined with equivalent electrical circuit (EEC) diagrams, the corrosion mechanism of Cu(100)/Cu(111) in different stages was proposed. In the initial stage, a smaller capacitive loop of Cu(111) suggested preferential adsorption of Cl− on air-formed oxide film on Cu(111). Deposited oxide and exposed bare metals also played an important role in corrosion resistance. Rectangle indentations and pyramidal structures formed on Cu(100)/Cu(111), respectively. Finally, a perfect interface on Cu(100) explained the tremendous capacitive loop and higher impedance (14,274 Ω·cm2). Moreover, defects in the oxides on Cu(111) provided channels for the penetration of electrolyte, leading to a lower impedance (9423 Ω·cm2) after 10D corrosion.

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Section: Introductionmentioning

confidence: 99%

Electrochemical Impedance Spectroscopy (EIS) Explanation of Single Crystal Cu(100)/Cu(111) in Different Corrosion Stages

et al. 2023

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“…A common anti-corrosion technique is surface coating protection, which can effectively isolate and delay external contact without altering the chemical composition or microstructure of the magnesium substrate. Therefore, researchers have found various methods to prepare coatings to improve the corrosion resistance of magnesium alloys, such as micro-arc oxidation [5,6], chemical conversion [7], spraying [8][9][10], organic coating [11] and electrodeposition coating [12,13]. Among the various coating preparation techniques, hydrothermal method has received widespread attention due to its advantages in simplicity, controllability, low cost and good protection effect.…”

Section: Introductionmentioning

confidence: 99%

Corrosion-resistant coating on AZ91D magnesium alloy based on one-step hydrothermal

Jiang

Zhu

2023

Corrosion Engineering, Science and Technology

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Magnesium alloys are widely used due to their excellent properties, but their corrosion resistance is limited by their high chemical activity. This paper proposes a one-step hydrothermal method with a relatively short reaction time and simple experimental steps for synthesising magnesium alloy coatings with good corrosion protection properties. The surface morphology, chemical composition and corrosion resistance of the in situ generated coatings were investigated using measurements such as field emission scanning electron microscopy (SEM), adhesion cross-cut tape (ACCT) test, X-ray diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), electrochemistry and immersion test, the results revealed that the corrosion current density (I corr ) of the coatings decreased by approximately four orders of magnitude and had good corrosion resistance.

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“…However, the main disadvantages are poor mechanical properties and resistance against wear, erosion, corrosion, etc. In recent years, some investigations have mainly concentrated on HVOF coating materials, such as amorphous Fe-based, stainless steel and hydroxyapatite [ 16 , 17 , 18 ]. Only a few articles are dedicated to cermet HVOF coating on magnesium alloy substrate [ 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, some investigations have mainly concentrated on HVOF coating materials, such as amorphous Fe-based, stainless steel and hydroxyapatite [ 16 , 17 , 18 ]. Only a few articles are dedicated to cermet HVOF coating on magnesium alloy substrate [ 16 , 17 ]. Cermet coatings produced by HVOF could substantially improve these properties on the top surface.…”

Section: Introductionmentioning

confidence: 99%

Microstructure Investigation of WC-Based Coatings Prepared by HVOF onto AZ31 Substrate

et al. 2021

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In this paper, three commercial cermet powders, WC-Co-Cr, WC-Co and WC-Cr3C2-Ni, were sprayed by the High Velocity Oxy Fuel (HVOF) method onto magnesium alloy AZ31 substrate. The coatings were investigated in terms of their microstructure, phase analysis and residual stress. The manufactured coatings were analyzed extensively using optical microscopy (OM), X-ray diffraction (XRD), scanning (SEM) and transmission electron microscopy (TEM). Based on microstructure studies, it was noted that the coatings show satisfactory homogeneity. XRD analysis shows that in WC-Co, WC-Co-Cr and WC-Cr3C2-Ni coatings, main peaks are related to WC. Weaker peaks such as W2C, Co0.9W0.1, Co and W for WC-Co and W2C, Cr3C2 and Cr7C3 for WC-Cr3C2-Ni also occur. In all cermet coatings, linear stress showed compressive nature. In WC-Co and WC-Cr3C2-Ni, residual stress had a similar value, while in WC-Co-Cr, linear stress was lower. It was also proved that spraying onto magnesium substrate causes shear stress in the WC phase, most likely due to the low elastic modulus of magnesium alloy substrate.

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Corrosion behavior of 316L stainless steel coatings on ZE41 magnesium alloy in chloride environments

Cited by 29 publications

References 37 publications

Electrochemical Impedance Spectroscopy (EIS) Explanation of Single Crystal Cu(100)/Cu(111) in Different Corrosion Stages

Electrochemical Impedance Spectroscopy (EIS) Explanation of Single Crystal Cu(100)/Cu(111) in Different Corrosion Stages

Corrosion-resistant coating on AZ91D magnesium alloy based on one-step hydrothermal

Microstructure Investigation of WC-Based Coatings Prepared by HVOF onto AZ31 Substrate

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