Biodegradability and antibacterial properties of MAO coatings formed on Mg-Sr-Ca alloys in an electrolyte containing Ag doped hydroxyapatite

YAZICI, Mehmet; Güleç, Ali; Gürbüz, Mevlüt; Tarakçı, Mehmet

doi:10.1016/j.tsf.2017.10.033

Cited by 39 publications

(11 citation statements)

References 41 publications

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“…Some studies developed coatings and surface treatments to regulate the degradation rate, i.e., by postponing the start of the degradation process [ 10 , 11 ]. On the other hand, some focused on adding bioactive agents to target clinical events associated with implantation, such as hydroxyapatite (HA) for enhancing bone regeneration and silver for improving antibacterial activity [ 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Potential bioactive coating system for high-performance absorbable magnesium bone implants

Sarian

Iqbal

Sotoudehbagha

et al. 2022

Bioactive Materials

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Magnesium alloys are considered the most suitable absorbable metals for bone fracture fixation implants. The main challenge in absorbable magnesium alloys is their high corrosion/degradation rate that needs to be controlled. Various coatings have been applied to magnesium alloys to slow down their corrosion rates to match their corrosion rate to the regeneration rate of the bone fracture. In this review, a bioactive coating is proposed to slow down the corrosion rate of magnesium alloys and accelerate the bone fracture healing process. The main aim of the bioactive coatings is to enhance the direct attachment of living tissues and thereby facilitate osteoconduction. Hydroxyapatite, collagen type I, recombinant human bone morphogenetic proteins 2, simvastatin, zoledronate, and strontium are six bioactive agents that show high potential for developing a bioactive coating system for high-performance absorbable magnesium bone implants. In addition to coating, the substrate itself can be made bioactive by alloying magnesium with calcium, zinc, copper, and manganese that were found to promote bone regeneration.

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Section: Introductionmentioning

confidence: 99%

Potential bioactive coating system for high-performance absorbable magnesium bone implants

Sarian

Iqbal

Sotoudehbagha

et al. 2022

Bioactive Materials

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“…Following the idea of inducing antibacterial properties, a type of surface coating was proposed, using silver-doped hydroxyapatite nano-powder (Ag-HA) by micro-arc oxidation. The coating clearly provided antibacterial properties, but decreased the corrosion resistance [131].…”

Section: New Challenges In Coatings On Biodegradable Mg Alloysmentioning

confidence: 97%

Sustainable Coatings on Metallic Alloys as a Nowadays Challenge

2021

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Starting with a description of the meaning of sustainable coating nowadays, this review presents a selection of methods for sustainable coatings manufacture using raw materials, saving energy and costs. This selection creates an introduction for the coatings performances of intensively investigated coated alloys and their multifunctionality. There are many examples and EU recommendations to be discussed, and we especially chose to introduce sustainable coatings with both industrial and medical functions, such as bioinspired films and coatings on high-entropy alloys, biodegradable metallic alloys, etc. A special focus is on nanotechnology and nanomaterials in green procedures, enhancing coatings’ multifunctionality, introducing green corrosion inhibitors, smart additives, and coatings based on superhydrophobicity. The conclusions and future perspectives of sustainable and multifunctional coatings, as expressions of sustainable advanced materials, are based on important motivations of such studies.

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“…Various particles including Al 2 O 3 [26], MoS 2 [27], CeO 2 [28], SiO 2 [29], TiO 2 [30] to improve the corrosion behavior, of SiO 2 [29], Si 3 N 4 [31] to improve abrasion behavior and nanoparticles of Ag [32], AgHAp [33], CuO [34,35] to improve the antibacterial performance of PEO coatings produced on Mg and its alloys have been utilized. Among the chemical composition of nanoparticles, HAp is a beneficial and safe option for implants as they are the principal component of human bones [36].…”

Section: Introductionmentioning

confidence: 99%

Effect of ZnO nanoparticles addition to PEO coatings on AZ31B Mg alloy: antibacterial effect and corrosion behavior of coatings in Ringer’s physiological solution

Seyfi

Fattah‐alhosseini

Pajohi‐Alamoti

et al. 2021

Journal of Asian Ceramic Societies

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In this paper, the plasma electrolyte oxidation (PEO) technique was applied to modify the AZ31B Mg alloy surface. Effects of various concentrations of ZnO nanoparticles into an electrolyte with nanoparticles of hydroxyapatite (HAp) on the antibacterial and corrosion behavior of coatings were studied. Potentiodynamic polarization tests were done in Ringer's electrolyte to study the coatings corrosion behavior. Results of XRD indicated that the provided PEO films mostly have phases of HAp, MgO, and Mg 3 (PO 4 ) 2 and ZnO. The results indicated that increasing the concentration of ZnO nanoparticles raised the thickness, roughness, and wetting angle and also enhanced the coatings antibacterial activity. The inhibition percentage of bacterial growth for the specimen with the highest concentration of nanoparticles (4 g/L) after 6 h against E. coli and S. aureus was 23.5% and 45.5%, respectively. The concentration of nanoparticles had no major effect on the porosity size of the ceramic coating. Moreover, adding ZnO nanoparticles declined the corrosion current density and raised the corrosion potential with regard to the metal substrate. The formed coating in the solution containing 1 g/ L ZnO nanoparticles had the highest corrosion behavior among all of specimens that led to a 970 multiplication corrosion resistance of AZ31B Mg alloy.

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Biodegradability and antibacterial properties of MAO coatings formed on Mg-Sr-Ca alloys in an electrolyte containing Ag doped hydroxyapatite

Cited by 39 publications

References 41 publications

Potential bioactive coating system for high-performance absorbable magnesium bone implants

Potential bioactive coating system for high-performance absorbable magnesium bone implants

Sustainable Coatings on Metallic Alloys as a Nowadays Challenge

Effect of ZnO nanoparticles addition to PEO coatings on AZ31B Mg alloy: antibacterial effect and corrosion behavior of coatings in Ringer’s physiological solution

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