Corrosion resistance of plasma-anodized AZ91D magnesium alloy by electrochemical methods

Barchiche, Chems-Eddine; Rocca, Emmanuel; Juers, C.; Hazan, J.; Steinmetz, J.

doi:10.1016/j.electacta.2007.04.030

Cited by 157 publications

(63 citation statements)

References 27 publications

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“…Clearly, controlling the corrosion rate is required to make use of magnesium and its alloy materials feasible for surgical implantation. Lots of methods have been introduced to hinder corrosion rate of magnesium-based materials by surface modification methods including plasma anodization [23], microarc oxidation [24], as well as polymer coating [25,26]. Among them, polymer coating not only is potential to corrosion resistance, but also can act as a drug reservoir [3,27,28].…”

Section: Surface Modification Strategiesmentioning

confidence: 99%

The Surface Modification Methods for Constructing Polymer-Coated Stents

Fan

Yang

2018

International Journal of Polymer Science

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Implanting a metal stent plays a key role in treating cardiovascular diseases. However, the high corrosion rate of metal-based devices severely limits their practical applications. Therefore, how to control the corrosion rate is vital to take full advantages of metal-based materials in the treatment of cardiovascular diseases. This review details various methods to design and construct polymer-coated stents. The techniques are described and discussed including plasma deposition, electrospinning, dip coating, layer-by-layer self-assembly, and direct-write inkjet. Key point is provided to highlight current methods and recent advances in hindering corrosion rate and improving biocompatibility of stents, which greatly drives the rising of some promising techniques involved in the ongoing challenges and potential new trends of polymer-coated stents.

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Section: Surface Modification Strategiesmentioning

confidence: 99%

The Surface Modification Methods for Constructing Polymer-Coated Stents

Fan

Yang

2018

International Journal of Polymer Science

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“…The degree of porosity and oxide layer quality could be enhanced by anodization parameter adjustment. These parameters include electrolyte composition, anodization voltage, current and time [32]. Anodization performed in different baths, for example an alkaline electrolyte is based on potassium hydroxide, phosphate, fluoride, or silicate-containing baths.…”

Section: Anodization Processmentioning

confidence: 99%

Surface Modification of Magnesium and its Alloys Using Anodization for Orthopedic Implant Application

Mousa¹,

Park²,

Kim³

2017

Magnesium Alloys

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Magnesium (Mg) as a biodegradable implant brings a revolution in medical field application, especially in bone implant and stent application. Biodegradability of Mg has attracted attentions of researchers to avoid secondary surgery to remove the implant materials after healing process. Various advantages of Mg make it suitable for medical application such as density, good mechanical properties and biodegradation. However, Mg biodegradability must be controlled to meet tissue-healing period of time because of the high degradation in a physiological environment. Fast corrosion and high alkalinity due to hydrogen release induce tissue inflammation, which limits its clinical applications. Many techniques are applied to the Mg surface to improve surface biocompatibility and control its biodegradability. This chapter focuses on anodization of Mg and its alloys to improve corrosion resistance and biocompatibility for orthopedic application. Mg coating with thin film apatite could enhance the biocompatibility and increase osseointegration formation in the bone fracture side. Evaluation of the required anodized film discussed in the chapter such as chemical composition, biodegradability and biocompatibility.

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“…However, the low corrosion resistant property of the magnesium alloys limits the use at large scale, so it is necessary to improve the corrosion resistant properties of the magnesium alloys. To improve the fault, various surface treatments for the preparation of protection films such as anodized film, chemical conversion film, and polymer film on magnesium alloys have been developed [5][6][7][8]. Among them, the chemical conversion films have been practically applied to Mg components such as parts of automotive components because of easy operation and low cost.…”

Section: Introductionmentioning

confidence: 99%

Formation of Corrosion Resistant Mg(OH)2 Film Containing Mg-Al Layered Double Hydroxide on Mg Alloy Using Steam Coating

Ishizaki¹,

Tsunakawa²,

Shimada³

et al. 2017

dtetr

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Abstract. In recent years, a reduction in weight of materials is highly desirable in the fields of transport industry and information technology devices. Magnesium (Mg) alloys have excellent physical and mechanical properties such as low density, good electromagnetic shielding, and high strength/weight ratio. Unfortunately, they have a great issue that is low corrosion. Thus, it is very important to develop surface treatment technologies to improve the corrosion resistance of magnesium alloys. Many surface treatments such as chemical conversion, anodic oxidization, and electroplating have been developed. However, there processes require multi-step pretreatments and waste liquid treatments. Thus, the development of a simple, easy, and low-cost surface treatment is highly desirable. In this paper, we report a novel preparation method of anticorrosive film on Mg alloy by steam coating and the corrosion resistance of the film. The prepared films were characterized by XRD, SEM, EDX, and electrochemical measurements. Polarization curve measurements demonstrated that the E corr and i corr values were found to be most positive potential and lowest current density in all the samples, indicating that the sample had best corrosion resistant performance.

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Corrosion resistance of plasma-anodized AZ91D magnesium alloy by electrochemical methods

Cited by 157 publications

References 27 publications

The Surface Modification Methods for Constructing Polymer-Coated Stents

The Surface Modification Methods for Constructing Polymer-Coated Stents

Surface Modification of Magnesium and its Alloys Using Anodization for Orthopedic Implant Application

Formation of Corrosion Resistant Mg(OH)2 Film Containing Mg-Al Layered Double Hydroxide on Mg Alloy Using Steam Coating

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