Development of corrosion-resistant electroplating on AZ91 Mg alloy by employing air and water-stable eutectic based ionic liquid bath

Singh, Charu; Tiwari, Shashi Kant; Singh, Raghuvir

doi:10.1016/j.surfcoat.2021.127881

Cited by 17 publications

(8 citation statements)

References 30 publications

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“…Magnesium (Mg) alloys have attracted extensive attention due to their low density and good mechanical properties. − However, the poor corrosion resistance of magnesium alloys tremendously hinders their widespread application . To improve the corrosion resistance of magnesium alloys, surface treatment methods are usually used to build protective coatings on the surfaces of magnesium alloys, for instance, heat treatment, chemical conversion coatings, anodic oxide coatings, electroplating coating, electroless coating, vapor deposition, etc. Among these, chemical conversion coating has attracted worldwide attention due to its simple preparation process and its ability to handle workpieces with complex shapes. , The layered double hydroxide (LDH) film in chemical conversion films is favored by researchers due to its simple preparation process, environmental protection, and good corrosion resistance. , …”

Section: Introductionmentioning

confidence: 99%

“… 1 − 3 However, the poor corrosion resistance of magnesium alloys tremendously hinders their widespread application. 4 To improve the corrosion resistance of magnesium alloys, surface treatment methods are usually used to build protective coatings on the surfaces of magnesium alloys, for instance, heat treatment, 5 chemical conversion coatings, 6 anodic oxide coatings, 7 electroplating coating, 8 electroless coating, 9 vapor deposition, 10 etc. Among these, chemical conversion coating has attracted worldwide attention due to its simple preparation process and its ability to handle workpieces with complex shapes.…”

Section: Introductionmentioning

confidence: 99%

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Optimization of Mg–Al Layered Double Hydroxide Film Preparation and Corrosion Resistance Study on AZ91D Mg Alloy by Multivariate Polynomial Regression Fitting

Wang,

Liu,

Wei

et al. 2024

ACS Omega

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Layered double hydroxide (LDH) films have received extensive attention for their unique physical barrier function and ion exchange properties, which make them promising candidates for corrosion protection of magnesium alloys. In this paper, we used the multiple polynomial regression fitting method to establish a regression equation for the electrochemical corrosion resistance with the reaction temperature (T), pH, and reaction time (t) of the Mg−Al LDH film on the AZ91D magnesium alloy. The goodness of fit, confidence, and residual analyses confirmed the high accuracy of the model equation. According to the calculation using the fmincon function, the best corrosion resistance of the prepared samples could be achieved when the parameters are T = 135 °C, pH = 12.0, and t = 15 h. Then, the experimental results showed that the corrosion current density (I corr ) of the obtained LDH film under the above conditions could be 1.07 × 10 −7 A/cm 2 , approximately 3 orders of magnitude lower than the magnesium alloy substrate, after immersion in a 3.5 wt % NaCl solution for 180 h, the surface structure of the LDH film did not change significantly, and the I corr was still 2 orders of magnitude higher than that of the magnesium alloy substrate. Hence, a synergistic effect equation for the reaction temperature, pH, and reaction time on the corrosion resistance of the LDH film on a magnesium alloy surface prepared by the hydrothermal method was obtained. Moreover, using this equation, we obtained an LDH film with good corrosion resistance and durability, providing theoretical guidance for optimizing the process of preparing the LDH film by the hydrothermal method in practical applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimization of Mg–Al Layered Double Hydroxide Film Preparation and Corrosion Resistance Study on AZ91D Mg Alloy by Multivariate Polynomial Regression Fitting

Wang,

Liu,

Wei

et al. 2024

ACS Omega

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“…There are many methods of coatings manufacturing, which could be deposited on metallic substrates, including magnesium alloys, e.g. : anodization [22], electrodeposition [23], ionic liquid bath [24], micro arc oxidation [25], physical vapour deposition (PVD) [26,27] and even conversion coatings [28]. Also thermal spraying methods could be used in order to manufacture coatings on magnesium alloys, as follow: cold spray [29], arc spray [30,31], detonationgun [32], flame spray [33] and plasma spray [34,35].…”

Section: Introductionmentioning

confidence: 99%

Investigations on the Microstructure and Corrosion Performance of Different WC-Based Cermet Coatings Deposited by High Velocity Oxy Fuel Process onto Magnesium Alloy Substrate

Jonda¹,

Łatka²,

Maciej³

et al. 2023

Adv. Sci. Technol. Res. J.

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In the field of surface engineering, thermal spraying is very wide adopted in many branches of the industry. The main reasons of such situation are its flexibility as well as cost effectiveness. Among others, high velocity oxy fuel (HVOF) technique is dedicated for spraying hardmetal and cermet coatings, especially for wear-and corrosion resistance. Such type of coating could be a promising candidate as protective layer for magnesium alloys elements. These materials need a strong improvement in the corrosion protection as well as on the field of wear resistance in order to be widely used in the industry. In this work, different WC-based coatings, namely: (i) WC-Co, (ii) WC-Co-Cr and (iii) WC-Cr 3 C 2 -Ni manufactured by HVOF spraying, were investigated. The form of all feedstock materials was agglomerated and sintered powder. All coatings were sprayed with the same technological parameters, especially spray distance which was equal to 400 mm on the AZ91 magnesium alloy substrate. The main aim of the studies was to investigate the influence of the powder material on the corrosion resistance of obtained coatings. The manufactured coatings were examined in terms of its microstructure, using scanning electron microscope (SEM) and corrosion performance, which was assessed in the electrochemical corrosion investigations in 3.5% NaCl solution by Tafel method. The study showed that the corrosion resistance increasing in such order: AZ91 < WC-Cr 3 C 2 -Ni < WC-Co < WC-Co-Cr. It should be stressed that WC-Cr 3 C 2 -Ni coating exhibits very low corrosion performance, which could be effected by relatively high porosity (c.a. 3 vol.%) and because of that the more complex composition promotes creation of many corrosion cells.

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“…Numerous methods have been developed for the preparation of protective coatings on magnesium alloys, including chemical conversion [ 11 ], plasma electrolytic oxidation (PEO) [ 12 ], anodizing [ 13 ], electrochemical plating [ 14 ], polymer coatings [ 15 ], and vapor deposition [ 16 ]. Nonetheless, these coatings are inadequate to withstand the corrosion and erosion wear in extreme subsurface environments, on account of their low hardness and low thickness.…”

Section: Introductionmentioning

confidence: 99%

Corrosion and Erosion Wear Behaviors of HVOF-Sprayed Fe-Based Amorphous Coatings on Dissolvable Mg-RE Alloy Substrates

Yang¹,

Sun

Su³

et al. 2023

Materials

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To suppress the corrosion and erosion wear of dissolvable magnesium alloy ball seats in wellbores, Fe-based amorphous coatings were deposited on dissolvable Mg-RE alloy substrates, and their microstructure, corrosion behavior, and erosion wear behavior were studied. The thickness of Fe-based amorphous coatings on dissolvable Mg-RE alloy substrates can reach 1000 μm without any cracks, and their porosity and amorphous contents are 0.79% and 86.8%, respectively. Although chloride ions will damage the compactness and protective efficacy of passive films, Fe-based amorphous coatings still maintain low corrosion current density (3.31 μA/cm2) and high pitting potential (1 VSCE) in 20 wt% KCl solution. Due to their higher hardness, the erosion wear resistance of Fe-based amorphous coatings is about 4.16 times higher than that of dissolvable Mg-RE alloy substrates when the impact angle is 30°. Moreover, the erosion rates of Fe-based amorphous coatings exhibit a nonlinear relationship with the impact angle, and the erosion rate reaches the highest value when the impact angle is 60°. The erosion wear mechanisms of Fe-based AMCs vary with the impact angles, including cutting, delamination, splat fracture, and deformation wear. This work can provide effective guidance for the corrosion and wear protection of plugging tools made from dissolvable magnesium alloy.

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Development of corrosion-resistant electroplating on AZ91 Mg alloy by employing air and water-stable eutectic based ionic liquid bath

Cited by 17 publications

References 30 publications

Optimization of Mg–Al Layered Double Hydroxide Film Preparation and Corrosion Resistance Study on AZ91D Mg Alloy by Multivariate Polynomial Regression Fitting

Optimization of Mg–Al Layered Double Hydroxide Film Preparation and Corrosion Resistance Study on AZ91D Mg Alloy by Multivariate Polynomial Regression Fitting

Investigations on the Microstructure and Corrosion Performance of Different WC-Based Cermet Coatings Deposited by High Velocity Oxy Fuel Process onto Magnesium Alloy Substrate

Corrosion and Erosion Wear Behaviors of HVOF-Sprayed Fe-Based Amorphous Coatings on Dissolvable Mg-RE Alloy Substrates

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