Porous Functional Coatings by Microarc Oxidation

Markov, M. A.; Gerashchenkov, D. A.; Красиков, А. В.; Ulin, I. V.; Bykova, A. D.; Shishkova, M. L.; Yakovleva, N. V.

doi:10.1007/s10717-018-0067-9

Cited by 4 publications

(2 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Coatings fabricated via MAO have attracted much attention [ 1 , 26 , 27 , 28 ]. The most significant advantage of MAO coatings for use in biomaterials is the presence of pores on the coating surface and the ability to control the pore size by refining the process parameters [ 29 , 30 ]. This is because the composition of a MAO coating can also be changed by tailoring the electrolyte solution.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Antibacterial Calcium Phosphate Coatings for Biomedical Applications Fabricated via Micro-Arc Oxidation

Kozelskaya,

Verzunova,

Akimchenko

et al. 2023

Biomimetics

View full text Add to dashboard Cite

A promising method for improving the functional properties of calcium-phosphate coatings is the incorporation of various antibacterial additives into their structure. The microbial contamination of a superficial wound is inevitable, even if the rules of asepsis and antisepsis are optimally applied. One of the main problems is that bacteria often become resistant to antibiotics over time. However, this does not apply to certain elements, chemical compounds and drugs with antimicrobial properties. In this study, the fabrication and properties of zinc-containing calcium-phosphate coatings that were formed via micro-arc oxidation from three different electrolyte solutions are investigated. The first electrolyte is based on calcium oxide, the second on hydroxyapatite and the third on calcium acetate. By adding zinc oxide to the three electrolyte solutions, antibacterial properties of the coatings are achieved. Although the same amount of zinc oxide has been added to each electrolyte solution, the zinc concentration in the coatings obtained vary greatly. Furthermore, this study investigates the morphology, structure and chemical composition of the coatings. The antibacterial properties of the zinc-containing coatings were tested toward three strains of bacteria—Staphylococcus aureus, methicillin-resistant Staphylococcus aureus and Pseudomonas aeruginosa. Coatings of calcium acetate and zinc oxide contained the highest amount of zinc and displayed the highest zinc release. Moreover, coatings containing hydroxyapatite and zinc oxide show the highest antibacterial activity toward Pseudomonas aeruginosa, and coatings containing calcium acetate and zinc oxide show the highest antibacterial activities toward Staphylococcus aureus and methicillin-resistant Staphylococcus aureus.

show abstract

Section: Introductionmentioning

confidence: 99%

“…In addition, the porous surface of MAO coatings is suitable for the release of antibiotics to treat infections after surgery [ 32 ]. Good substrate adhesion, high hardness, the ability to uniformly coat metal implants with complex geometries, simple equipment, and low cost are key advantages of this method [ 29 , 31 ].…”

Section: Introductionmentioning

confidence: 99%

Antibacterial Calcium Phosphate Coatings for Biomedical Applications Fabricated via Micro-Arc Oxidation

Kozelskaya,

Verzunova,

Akimchenko

et al. 2023

Biomimetics

View full text Add to dashboard Cite

show abstract

Measurement of oxide coating thickness in the micro-arc oxidation process

Golubkov

Pecherskaya

Zinchenko

et al. 2020

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

The requirements to methods for measuring the oxide coatings thickness are formulated, allowing measurements to be carried out directly in the process of their formation in real time, which is a necessary condition for the controlled synthesis of coatings with desired properties. Based on a systematic approach, the existing methods for measuring the oxide coatings thickness and their metrological characteristics are analyzed. As a result, it was found that the most suitable for measuring the oxide coatings thickness during micro-arc oxidation are electrical methods, which include the method proposed by the authors based on a frequency integrating scanning transducer. The method proposed by authors allows to measure the thickness of the oxide layers directly in the process of their formation with high accuracy. This method is implemented in an intelligent automated system for the controlled synthesis of oxide coatings.

show abstract