Lanthanum–silicate–substituted apatite synthesized by fast mechanochemical method: Characterization of powders and biocoatings produced by micro–arc oxidation

Булина, Н. В.; Чайкина, М. В.; Prosanov, I. Yu.; Комарова, Е. Г.; Sedelnikova, M. B.; Sharkeev, Yurii P.; Sheikin, Vladimir V.

doi:10.1016/j.msec.2018.06.057

Cited by 27 publications

(8 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The formation of DCPA and MCPM phases in the coatings can be associated with the recrystallization of the previously amorphous CaP phase due to the growth of temperature inside the micro-arc discharges with an increase in the applied voltage. Previously [ 38 ], we described the mechanism of the formation of the DCPA and β-calcium pyrophosphate (β-CPP, β-Ca 2 P 2 O 7 ) phases in the micro-arc lanthanum-silicon-incorporated CaP coatings. Firstly, the main electrolyte components, which are phosphoric acid and calcium carbonate, react to form an MCPM and dicalcium phosphate dihydrate (CaHPO 4 ·H 2 O, brushite mineral) [ 43 ].…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Zn- or Cu-Containing CaP-Based Coatings Formed by Micro-arc Oxidation on Titanium and Ti-40Nb Alloy: Part I—Microstructure, Composition and Properties

et al. 2020

Self Cite

View full text Add to dashboard Cite

Zn- and Cu-containing CaP-based coatings, obtained by micro-arc oxidation process, were deposited on substrates made of pure titanium (Ti) and novel Ti-40Nb alloy. The microstructure, phase, and elemental composition, as well as physicochemical and mechanical properties, were examined for unmodified CaP and Zn- or Cu-containing CaP coatings, in relation to the applied voltage that was varied in the range from 200 to 350 V. The unmodified CaP coatings on both types of substrates had mainly an amorphous microstructure with a minimal content of the CaHPO4 phase for all applied voltages. The CaP coatings modified with Zn or Cu had a range from amorphous to nano- and microcrystalline structure that contained micro-sized CaHPO4 and Ca(H2PO4)2·H2O phases, as well as nano-sized β-Ca2P2O7, CaHPO4, TiO2, and Nb2O5 phases. The crystallinity of the formed coatings increased in the following order: CaP/TiNb < Zn-CaP/TiNb < Cu-CaP/TiNb < CaP/Ti < Zn-CaP/Ti < Cu-CaP/Ti. The increase in the applied voltage led to a linear increase in thickness, roughness, and porosity of all types of coatings, unlike adhesive strength that was inversely proportional to an increase in the applied voltage. The increase in the applied voltage did not affect the Zn or Cu concentration (~0.4 at%), but led to an increase in the Ca/P atomic ratio from 0.3 to 0.7.

show abstract

Section: Resultsmentioning

confidence: 99%

“…The solid-phase mechanochemical synthesis was done to produce all HAs according to the procedure described in the ref. [ 36 , 37 , 38 ]. All suspension-electrolytes had acid medium with pH of 1–2.…”

Section: Methodsmentioning

confidence: 99%

Zn- or Cu-Containing CaP-Based Coatings Formed by Micro-arc Oxidation on Titanium and Ti-40Nb Alloy: Part I—Microstructure, Composition and Properties

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…TCP and Mn-TCP were synthesized by the mechanoactivation method [ 22 ]. Calcium oxide (chemical grade, Chimmed, Moscow, Russia), ammonia dihydrogen phosphate (analytical grade, Chimmed, Moscow, Russia), manganese acetate tetrahydrate (analytical grade, Chimmed, Moscow, Russia), and ammonia solution 25% (Chimmed, Moscow, Russia) were used for the syntheses.…”

Section: Methodsmentioning

confidence: 99%

In Vitro Properties of Manganese-Substituted Tricalcium Phosphate Coatings for Titanium Biomedical Implants Deposited by Arc Plasma

et al. 2020

View full text Add to dashboard Cite

Bioactive manganese (Mn)-doped ceramic coatings for intraosseous titanium (Ti) implants are developed. Arc plasma deposition procedure is used for coatings preparation. X-ray Diffraction, Scanning Electron Microscopy-Energy Dispersive X-ray Spectroscopy, and Electron Paramagnetic Resonance (EPR) methods are applied for coatings characterization. The coatings are homogeneous, composed of the main phase α-tricalcium phosphate (α-TCP) (about 67%) and the minor phase hydroxyapatite (about 33%), and the Mn content is 2.3 wt%. EPR spectroscopy demonstrates that the Mn ions are incorporated in the TCP structure and are present in the coating in Mn2+ and Mn3+ oxidation states, being aggregated in clusters. The wetting contact angle of the deposited coatings is suitable for cells’ adhesion and proliferation. In vitro soaking in physiological solution for 90 days leads to a drastic change in phase composition; the transformation into calcium carbonate and octacalcium phosphate takes place, and no more Mn is present. The absence of antibacterial activity against Escherichia coli, Enterococcus faecalis, and Pseudomonas aeruginosa bacteria strains is observed. A study of the metabolic activity of mouse fibroblasts of the NCTC L929 cell line on the coatings using the MTT (dye compound 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) test demonstrates that there is no toxic effect on the cell culture. Moreover, the coating material supports the adhesion and proliferation of the cells. A good adhesion, spreading, and proliferative activity of the human tooth postnatal dental pulp stem cells (DPSC) is demonstrated. The developed coatings are promising for implant application in orthopedics and dentistry.

show abstract

“…Apatite-based silicates are potentially very attractive hosts, as they have excellent stability thanks to the strong, rigid Si-O bonds, 11 coupled with chemical and structural flexibility with regards to accommodating guest ions. 12 Apatite-type materials in general are very versatile: they have been studied for applications including electrolytes for solid oxide fuel cells, [13][14][15][16][17][18] solid-state laser hosts, 19 nuclear waste immobilisation, 20 and in biomedicine, [21][22][23][24][25][26][27] as well as use as phosphors. 28 They can be described in terms of the general formula A 10 (BO 4 ) 6 X 2±δ (where A is a large cation, B is a smaller cation, and X is an anion).…”

Section: Introductionmentioning

confidence: 99%

Single-phase white-emitting phosphors based on apatite-type gadolinium silicate, Gd_9.33(SiO₄)₆O₂ doped with Dy³⁺, Eu³⁺ and Tb³⁺

2019

View full text Add to dashboard Cite

show abstract

Lanthanum–silicate–substituted apatite synthesized by fast mechanochemical method: Characterization of powders and biocoatings produced by micro–arc oxidation

Cited by 27 publications

References 47 publications

Zn- or Cu-Containing CaP-Based Coatings Formed by Micro-arc Oxidation on Titanium and Ti-40Nb Alloy: Part I—Microstructure, Composition and Properties

Zn- or Cu-Containing CaP-Based Coatings Formed by Micro-arc Oxidation on Titanium and Ti-40Nb Alloy: Part I—Microstructure, Composition and Properties

In Vitro Properties of Manganese-Substituted Tricalcium Phosphate Coatings for Titanium Biomedical Implants Deposited by Arc Plasma

Single-phase white-emitting phosphors based on apatite-type gadolinium silicate, Gd_9.33(SiO₄)₆O₂ doped with Dy³⁺, Eu³⁺ and Tb³⁺

Contact Info

Product

Resources

About

Lanthanum–silicate–substituted apatite synthesized by fast mechanochemical method: Characterization of powders and biocoatings produced by micro–arc oxidation

Cited by 27 publications

References 47 publications

Zn- or Cu-Containing CaP-Based Coatings Formed by Micro-arc Oxidation on Titanium and Ti-40Nb Alloy: Part I—Microstructure, Composition and Properties

Zn- or Cu-Containing CaP-Based Coatings Formed by Micro-arc Oxidation on Titanium and Ti-40Nb Alloy: Part I—Microstructure, Composition and Properties

In Vitro Properties of Manganese-Substituted Tricalcium Phosphate Coatings for Titanium Biomedical Implants Deposited by Arc Plasma

Single-phase white-emitting phosphors based on apatite-type gadolinium silicate, Gd9.33(SiO4)6O2 doped with Dy3+, Eu3+ and Tb3+

Contact Info

Product

Resources

About

Single-phase white-emitting phosphors based on apatite-type gadolinium silicate, Gd_9.33(SiO₄)₆O₂ doped with Dy³⁺, Eu³⁺ and Tb³⁺