Micro-arc oxidation coating on porous magnesium foam and its potential biomedical applications

M.Rúa, J.; Zuleta, Alejandro; Ramírez, José Ernesto; Fernández‐Morales, Patricia

doi:10.1016/j.surfcoat.2018.12.106

Cited by 37 publications

(19 citation statements)

References 73 publications

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“…A porous morphology of homogenous calcium phosphate coating was obtained. The possibility of modification and controlling the degradability and bioabsorbability of the MAO coated Mg foam scaffolds was confirmed [106].…”

Section: Micro-arc Oxidationmentioning

confidence: 86%

“…Calcium phosphate coatings were reported in the study of Rúa et al Biocompatible coating was prepared using the MAO process onto magnesium biodegradable foams with potential biomedical function [106]. SEM images of uncoated and MAO-coated Mg foam are shown in Figure 15.…”

Section: Calcium Phosphatementioning

confidence: 99%

“…Iron foams with strontium and bisphosphonate coating are very promising implant bone grafts for fracture defect reparation in osteopenic bone [26]. The resulting bioceramic MAO coating consisted of calcium phosphate compounds, the main elements of the bone structure, and it was observed that the values of the Young's modulus of the prepared samples were suitable for bone tissue applications [106].…”

Section: Calcium Phosphatementioning

confidence: 99%

“…Further promising biomaterials are Mg-based foams with calcium phosphate coatings prepared using the MAO process [106] and Mg foams with dense and homogeneous Zn coating prepared using the PVD method [91] which improved the compressive strength while allowing the decrease in corrosion rate required for Mg-based material. These resorbable biomaterials have high potential as bone implantation materials.…”

Section: Promising Biomaterialsmentioning

confidence: 99%

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Surface Modifications of Biodegradable Metallic Foams for Medical Applications

et al. 2020

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Significant progress was achieved presently in the development of metallic foam-like materials improved by biocompatible coatings. Material properties of the iron, magnesium, zinc, and their alloys are promising for their uses in medical applications, especially for orthopedic and bone tissue purposes. Current processing technologies and a variety of modifications of the surface and composition facilitate the design of adjusted medical devices with desirable mechanical, morphological, and functional properties. This article reviews the recent progress in the design of advanced degradable metallic biomaterials perfected by different coatings: polymer, inorganic ceramic, and metallic. Appropriate coating of metallic foams could improve the biocompatibility, osteogenesis, and bone tissue-bonding properties. In this paper, a comprehensive review of different coating types used for the enhancement of one or several properties of biodegradable porous implants is given. An outline of the conventional preparation methods of metallic foams and a brief overview of different alloys for medical applications are also provided. In addition, current challenges and future research directions of processing and surface modifications of biodegradable metallic foams for medical applications are suggested.

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Section: Micro-arc Oxidationmentioning

confidence: 86%

Section: Calcium Phosphatementioning

confidence: 99%

Section: Calcium Phosphatementioning

confidence: 99%

Section: Promising Biomaterialsmentioning

confidence: 99%

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Surface Modifications of Biodegradable Metallic Foams for Medical Applications

et al. 2020

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“…On average, 1 m 3 water contains 4000 g of magnesium, which is less than sodium and has a wide range of sources. Magnesium alloy has the advantages of low density, high specific strength, good impact resistance and strong radiation resistance (Bakkar and Neubert, 2007; Seyfoori et al ,2012; Rúa et al , 2019). It has good application prospects in the fields of aviation, automobile parts manufacturing and electronic communications (Muhaffel and Cimenoglu, 2019; Golshirazi et al ,2017; Li et al , 2017; Lee and Do, 2016).…”

Section: Introductionmentioning

confidence: 99%

Study on micro-arc oxidation coating of magnetic metal powder composite magnesium alloy

Cui

et al. 2020

ACMM

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Purpose The purpose of this paper is to prepare composite micro-arc oxide coatings with better wear resistance and corrosion resistance. Design/methodology/approach A nickel powder composite micro-arc oxide film was prepared on the surface of the magnesium alloy by the method of organically combining ultra-fine Ni powder with micro arc oxidation film layer. In this experiment, the changes in the corrosion resistance and microstructure of the composite film layer after adding Ni powder were studied, and the effect of the addition of glycerin on the corrosion resistance of the film layer was analyzed. Findings The results show that the ultra-fine nickel powder was successfully prepared by the liquid phase reduction method, and the micro-arc oxidation process was modified under the optimal addition amount. The surface of the micro-arc oxide film made of ultra-fine nickel powder was found by SEM to have smooth surfaces and few holes. According to X-ray diffraction analysis, the phase composition of the micro-arc oxide film layer was Mg, Ni, NiSiO4, MgNi (SiO4) and Mg2SiO4. According to the results of electrochemical tests, the corrosion resistance of the micro-arc oxidation composite film layer was improved after the addition of ultra-fine Ni powder, the corrosion current was greatly reduced and the impedance has been improved. And after adding glycerin, the surface of the film layer becomes denser, and the corrosion resistance of the micro-arc oxide film is significantly improved. Originality/value Through this experimental research, a micro-arc oxide coating of powder composite magnesium alloy was successfully prepared. The corrosion resistance of the micro-arc oxidation film layer has been improved, and certain functions had been given to the micro-arc oxidation composite film, which has increased the application field of magnesium alloys.

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