Physical, chemical and biological properties of micro‐arc deposited calcium phosphate coatings on titanium and zirconium‐niobium alloy

Легостаева, Е. В.; Kulyashova, K.S.; Комарова, Е. Г.; Epple, Matthias; Sharkeev, Yu. P.; Хлусов, И. А.

doi:10.1002/mawe.201300107

Cited by 37 publications

(28 citation statements)

References 10 publications

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“…The average roughness (Ra) of the samples was 0.3-0.5 µm. In order to realize the MAO method for deposition of coatings, the Micro-Arc 3.0 installation was used as in the previous works [32][33][34]. The installation consists of pulsed power source, galvanic bath with water cooling system, molybdenum electrodes, and personal computer with Micro-Arc 3.0 software for the MAO process controlling.…”

Section: Sample Preparationmentioning

confidence: 99%

“…Usually, researchers [21,22,28,29] carry out the MAO process using a potentiodynamic regime with the constant current density. In presented work, the CaP coating deposition was carried out using the anode potentiostatic regime under the fixed voltages [32][33][34]. In this case, the current density decreased during the MAO process due to the growth of dielectric CaP coatings as shown in Figure 2.…”

Section: Regularities Of Formation Of the Cap Coatings On The Mg Alloymentioning

confidence: 99%

“…), the electrolyte composition, and type of the substrate material (Ti, Nb, Zr, Mg, etc.) [24,25,28,[32][33][34]. Generally, the researchers have implemented the MAO processing of valve metals in electrolytic true solutions for production of biocoatings.…”

Section: Introductionmentioning

confidence: 99%

“…Generally, the researchers have implemented the MAO processing of valve metals in electrolytic true solutions for production of biocoatings. However, our previous works [32][33][34] and works of another authors [35][36][37][38][39] showed that the usage of electrolytic suspension with incorporation of nanoparticles of CaP compounds, in particular, hydroxyapatite (HA), promotes to form the thick (~100 µm) coatings with developed surface and the unique complex of electrochemical and biological properties. Recently, Santos et al [38] demonstrated the one-step fabrication of a novel graphene oxide/HA nanoparticles/phosphate coating for better biocompatibility and osteointegration of ultrahigh-purity Mg implant.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of the Micro-Arc Coatings Containing β-Tricalcium Phosphate Particles on Mg-0.8Ca Alloy

Sedelnikova

Комарова

Sharkeev

et al. 2018

Metals

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The characterization of the microstructure, morphology, topography, composition, and physical and chemical properties of the coatings containing β-tricalcium phosphate (β-TCP) particles deposited by the micro-arc oxidation (MAO) method on biodegradable Mg-0.8Ca alloy has been performed. The electrolyte for the MAO process included the following components: Na 2 HPO 4 •12H 2 O, NaOH, NaF, and β-Ca 3 (PO 4) 2 (β-TCP). The coating morphology, microstructure, and compositions have been studied using scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX), and X-ray diffraction (XRD). With increasing of the MAO voltage from 350 to 500 V, the coating thickness and surface average roughness of the coatings increased linearly from 6 to 150 µm and from 2 to 8 µm, respectively. The coating deposited at 350 V had more homogeneous porous morphology with numerous pores similar by sizes (2-3 µm) than the coatings formed at 450-500 V. The β-TCP isometric particles were included in the coating surface. The XRD recognized the amorphous-crystalline structure in the coatings with incorporation of the following phases: β-TCP, α-TCP, MgO (periclase) and hydroxyapatite (HA). The corrosion experiments showed that the biodegradation rate of the Mg-0.8Ca alloy coated by calcium phosphates is almost 10 times less than that of uncoated alloy.

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Section: Sample Preparationmentioning

confidence: 99%

Section: Regularities Of Formation Of the Cap Coatings On The Mg Alloymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Characterization of the Micro-Arc Coatings Containing β-Tricalcium Phosphate Particles on Mg-0.8Ca Alloy

Sedelnikova

Комарова

Sharkeev

et al. 2018

Metals

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“…Unfortunately, Zr alloys as well as other bioinert metals and alloys show low binding between implant and bone tissue in early stages of osseointegration. This problem can be solved by the surface treatment and deposition of bioactive coatings [7,8].…”

Section: Introductionmentioning

confidence: 99%

Bioactive calcium phosphate coatings on metallic implants

Sedelnikova

Комарова

Sharkeev

et al. 2017

AIP Conference Proceedings

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Biocomposites based on bioinert metals or alloys and bioactive calcium phosphate coatings are a promising tendency of the new-generation implants development. In recent years, the approach of regenerative medicine based on the use of biodegradable biomaterials has been priority direction. Such materials are capable of initiating the bone tissue regeneration and replaced by the newly formed bone. The microarc oxidation (MAO) method allows obtaining the bioactive coatings with a porous structure, special functional properties, and modified by the essential elements. During the last decade, the investigations in the field of the nanostructured biocomposites based on bioinert Ti, Zr, Nb and their alloys with a calcium phosphate coatings deposited by the MAO method have been studied in the Institute of Strength Physics and Materials Science SB RAS, Tomsk. In this article the possibility to produce the bioactive coatings with high antibacterial and osseoconductive properties due to the introduction in the coatings of Zn, Cu, Ag, La, Si elements and wollastonite CaSiO 3 was shown. The high hydrophilic and bioresorbed coatings stimulate the processes of osseointegration of the implant into the bone tissue. A promising direction in the field of the medical material science is a development of the metallic implants with good biomechanical compatibility to the bone, such as Ti-Nb alloys with a low elastic modulus that can be classified as biomaterials of the second generation. Zr and its alloys are promising materials for the dentistry and orthopedic surgery due to their high strength and corrosion resistance. Biodegradable Mg alloys are biomaterials of third generation. Such materials can dissolve with a certain speed in human body and excreted from the body thereby excluding the need for reoperation. This article presents the analysis of the study results of bioactive MAO coatings on Ti, Ti-Nb, Zr-Nb and Mg alloys and their promising medical application.

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Electrical Functionalization and Fabrication of Nanostructured Hydroxyapatite Coatings

Bystrov

Bystrova

Dekhtyar

et al. 2019

Bioceramics and Biocomposites

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Physical, chemical and biological properties of micro‐arc deposited calcium phosphate coatings on titanium and zirconium‐niobium alloy

Cited by 37 publications

References 10 publications

Characterization of the Micro-Arc Coatings Containing β-Tricalcium Phosphate Particles on Mg-0.8Ca Alloy

Characterization of the Micro-Arc Coatings Containing β-Tricalcium Phosphate Particles on Mg-0.8Ca Alloy

Bioactive calcium phosphate coatings on metallic implants

Electrical Functionalization and Fabrication of Nanostructured Hydroxyapatite Coatings

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