Combined PEO and Spray Pyrolysis Coatings of Phosphate and ZnO for Enhancing Corrosion Resistance in AZ31 Mg Alloy DOI Creative Commons
Ashish Kumar Singh, Reinis Drunka,

Paula Iesalniece

et al.

Surfaces, Journal Year: 2023, Volume and Issue: 6(4), P. 364 - 379

Published: Oct. 10, 2023

Oxide films produced from plasma electrolytic oxidation are porous in structure. While they have some passivating effect Mg alloys, the pores still lead to corrosion over long periods of exposure. In this study, spray pyrolysis was used seal oxide layer developed through method on alloy AZ31. The PEO coating acted as a good base for application due its morphology. Three different kinds coatings were obtained using precursors: zinc acetate ZnO, phosphoric acid phosphate (P), and mixture sodium ZnO+P. performance all three studied by performing electrochemical impedance polarization tests samples. Mass loss duration 1 week measured 3% NaCl solution immersion gravimetry. with only (P) found be most corrosion-resistant 52 times lower rate 50 more potential. chemical composition products XRD SEM-EDS analysis. ZnO+P highest, at up 1.4 5.1 higher than ZnO P, respectively.

Language: Английский

Improving the inflammatory-associated corrosion behavior of magnesium alloys by Mn3O4 incorporated plasma electrolytic oxidation coatings DOI Creative Commons

Sara Bahrampour,

Aidin Bordbar‐Khiabani, M. Hossein Siadati

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 483, P. 149016 - 149016

Published: Jan. 24, 2024

Biodegradable magnesium alloys for orthopedic bone fixation have been introduced various fields of application. The corrosion resistance implants weakens in physicochemical environments and is further compromised during post-implantation inflammation. In this study, Mn3O4-incorporated plasma electrolyte oxidation (PEO) coatings were developed on Mg-Zn-Ca substrate through two approaches: the addition KMnO4 salt inclusion Mn3O4 nanoparticles into composition. Incorporating additives electrolytes led to a reduction surface porosity an increase coating thickness both synthesis approaches. electrochemical immersion tests conducted under simulated normal conditions inflammatory conditions, where solutions prepared with hydrogen peroxide (H2O2) hydrochloric (HCl) acid. Both studies revealed that inflammation significantly increased rate uncoated biomaterial, escalating from approximately 2 mm·y-1 16 mm·y-1. Moreover, showed composite PEO coatings, incorporating (MnPR-PEO), demonstrated superior performance among all coated samples. Potentiodynamic polarization results indicated substantial current density, decreasing 73.9 μA·cm−2 basic 5.5 MnPR-PEO coatings. improved attributed their catalytic H2O2 scavenging, suggests promise implants, offering enhanced potential biomedical application benefits.

Language: Английский

Citations

35
Maximizing the potential applications of plasma electrolytic oxidation coatings produced on Mg-based alloys in anti-corrosion, antibacterial, and photocatalytic targeting through harnessing the LDH/PEO dual structure DOI Creative Commons
Elham Nikoomanzari, Arash Fattah‐alhosseini

Journal of Magnesium and Alloys, Journal Year: 2024, Volume and Issue: 12(7), P. 2674 - 2694

Published: July 1, 2024

There is an increasing interest in the development of Mg alloys, both for industrial and biomedical applications, due to their favorable characteristics such as being lightweight robust. However, inadequate corrosion resistance lack antibacterial properties pose significant challenges necessitating implementation advanced coating engineering techniques. Plasma electrolytic oxidation (PEO) has emerged a preferred technique because its distinctive successful surface modification results. there continuous need further enhancements optimize performance functionalities protective treatments. The integration layered double hydroxide (LDH) into PEO coatings on alloys presents promising approach bolstering properties. This thorough review delves latest developments integrating LDH corrosion-related purposes. It particularly emphasizes improvements resistance, effectiveness, photocatalytic resulting from incorporation coatings. two key mechanisms that enhance containing are anion exchangeability structure pore-sealing effect. Moreover, activity with stemmed release agents stored within structure, alterations pH levels, photothermal conversion property. Furthermore, by incorporating coatings, new opportunities emerge tackling environmental issues through boosted properties, especially realm pollutant degradation.

Language: Английский

Citations

19
Study on a facile method of in-situ fabricating enhanced corrosion protection LDH/PEO composites coating on Mg alloy and its growth behavior DOI

Wenyi Qiu,

Xinglong Ye, Yan Liu

et al.

Surface and Coatings Technology, Journal Year: 2025, Volume and Issue: 500, P. 131912 - 131912

Published: Feb. 12, 2025

Language: Английский

Citations

1
Multilayer PEO coatings with encapsulated cerium for active corrosion protection of aluminium DOI Creative Commons

Safiya Al Abri,

Tuomas P. J. Knowles,

Yiming Pan

et al.

npj Materials Degradation, Journal Year: 2025, Volume and Issue: 9(1)

Published: March 7, 2025

Abstract This work aims to develop multilayer coating systems enhance the long-term corrosion performance of aluminium-based components. The consists a high-performance ceramic matrix that provides physical barrier protection, and topcoat layer containing encapsulated Ce-based inhibitors, offering active protection through controlled released mechanisms. Two types nanoparticles were used for encapsulation, zeolite halloysite nanotubes, each with different release triggers kinetics. Multifunctional coatings demonstrated superior compared passive unmodified coatings. Inhibitor from was triggered by ionic exchange processes changes in pH associated activity.

Language: Английский

Citations

1
Smart self-healing coatings on biomedical magnesium alloys: A review DOI Creative Commons
Yanbin Zhao, Jing Bai, Feng Xue

et al.

Smart Materials in Manufacturing, Journal Year: 2023, Volume and Issue: 1, P. 100022 - 100022

Published: Jan. 1, 2023

With promising mechanical property and biodegradability, magnesium (Mg) alloys are considered as the potential candidates in biomedical application. Rapid degradation of Mg compromises performance interfacial bioactivity, hindering clinical adoption. Deposition a surface coating is an effective technique to improve corrosion protection bio-efficacy implants. Because natural degradability corrosion, inevitably damaged complex physiological environment. Therefore, it essential form self-healing that can repair damage restore stable structure functions alloys. This paper reviews recent advances technology related properties including biodegradation behavior, self-repairing activity, biocompatibility, other biological effects, healing mechanism discussed. Self-healing coatings suitable for include conversion coatings, encapsulation multilayered their vitro vivo reviewed by focusing on drug-controlled prolonged release, sterilization, cytocompatibility, osteogenesis, hemocompatibility, angiogenesis. review aims at providing guidance future research development practical

Language: Английский

Citations

21
Self-assembly Zn-containing layer on PEO-coated Mg with enhanced corrosion resistance, antibacterial activity, and osteogenic property DOI
Kun Qian, Cheng Wang,

Mengmeng Yang

et al.

Corrosion Science, Journal Year: 2023, Volume and Issue: 226, P. 111674 - 111674

Published: Nov. 17, 2023

Language: Английский

Citations

16
Effect of laser-assisted irradiation on the characteristics and corrosion behavior of plasma electrolytic oxidation ceramic coating on AZ31B magnesium alloy DOI
Lin Li,

Yanyi Yin,

Guolong Wu

et al.

Ceramics International, Journal Year: 2024, Volume and Issue: 50(21), P. 41364 - 41378

Published: July 31, 2024

Language: Английский

Citations

6
Effect of voltage on microstructure and corrosion resistance of micro-arc oxidation coating on Mg–Zn–Ca biodegradable alloy DOI Creative Commons

Siting Cheng,

Richu Wang,

Chaoqun Peng

et al.

Journal of Materials Research and Technology, Journal Year: 2024, Volume and Issue: 30, P. 3021 - 3033

Published: April 8, 2024

This work discussed the influences of voltage on microstructure and corrosion resistance micro-arc oxidation (MAO) coating developed Mg-2Zn-0.3Ca (ZX20) alloys. The MAO coatings ZX20 alloy surface consist MgO Mg2SiO4 compounds. They feature two layers, namely a porous outer layer dense inner layer. Higher forms thicker alloy, meanwhile, larger diameter micropores more thermal micro-cracks are generated in coating. obtained at 400V has largest thickness (5.98±0.23 μm), (1.02±0.64 most cracks amount Mg2SiO4. 300V contact angle value highest bonding strength. During immersion corrosion, corrosive ions such as Cl- can enter react with to generate Mg(OH)2, resulting dissolution With prolong time, local form weak site coating, speeding up corrosion. While, containing chemically stable less defect, providing an effective physical barrier for substrate enhancing alloy. coated exhibits lowest degradation rate (PH=0.13 mm·y-1) due its layer, well having

Language: Английский

Citations

5
Mg alloys with antitumor and anticorrosion properties for orthopedic oncology: A review from mechanisms to application strategies DOI Creative Commons
Zhensheng Lin, Yuhe Wei, Huazhe Yang

et al.

APL Bioengineering, Journal Year: 2024, Volume and Issue: 8(2)

Published: April 17, 2024

As a primary malignant bone cancer, osteosarcoma (OS) poses great threat to human health and is still huge challenge for clinicians. At present, surgical resection the main treatment strategy OS. However, intervention will result in large defect, some tumor cells remaining around excised tissue often lead recurrence metastasis of Biomedical Mg-based materials have been widely employed as orthopedic implants defect reconstruction, and, especially, they can eradicate residual OS due antitumor activities their degradation products. Nevertheless, fast corrosion rate Mg alloys has greatly limited application scope biomedical field, improvement resistance impair effects, which mainly arise from rapid corrosion. Hence, it vital balance alloys. The presented review systematically discussed potential mechanisms three products Moreover, several strategies simultaneously enhance anticorrosion properties effects were also proposed.

Language: Английский

Citations

5
The Impact of Pre- and Post-Treatment Processes on Corrosion Resistance of Micro-Arc Oxidation Coatings on Mg Alloys: A Systematic Review DOI Open Access

J.W.H. Chi,

Hongliang Zhang,

Shuyu Song

et al.

Materials, Journal Year: 2025, Volume and Issue: 18(3), P. 723 - 723

Published: Feb. 6, 2025

As one of the lightest metallic structural materials, magnesium (Mg) alloys possess numerous distinctive properties and are utilized across a broad spectrum applications. However, poor corrosion resistance Mg limits their application. Micro-arc oxidation (MAO) is an effective surface treatment method that enhances alloys. Nevertheless, intrinsic porous structure MAO coatings hinders significant improvement in resistance. Research indicates pre- post-treatment processes associated with markedly enhance densification oxide coatings, thereby improving overall performance. This paper aims to provide comprehensive review analysis effects various processes, highlighting key advancements research gaps on An in-depth crucial role pre-treatment optimizing interfacial bonding enhancing coating density conducted using electrochemical testing scanning electron microscopy (SEM). Finally, future development discussed.

Language: Английский

Citations

0