Electrocrystallization of nanocrystallite calcium phosphate coatings on titanium substrate at different current densities

Calcium phosphates coatings were deposited onto titanium discs via en electrodeposition method. Discs were blasted with calcium phosphate particles and etched in a mixture of sulfuric and fluoric acids. Temperatures from 25 to 80°C and current densities from 8 to 120 mA/ cm2 were used. Deposition times tested were between 10 and 120 min. The electrolyte consisted of a super saturated solution stirred at 250 rpm. The amount of magnesium (Mg2+) and carbonate (HCO3-) ions was varied from 0 to 1 mM. Coatings increased in thickness by increasing deposition time. The different amounts of Mg2+ and HCO3- affected the homogeneity and morphology of the coatings. Main factors affecting the deposition were temperature of electrolyte and current density.

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Characterization of laser cladding calcium phosphate coatings on titanium substrate

Pacific International Conference on Applications of Lasers and Optics ◽

10.2351/1.5057162 ◽

2008 ◽

Author(s):

Xiukun Li ◽

Min Zheng ◽

Ding Fan ◽

Jianbin Zhang

Keyword(s):

Calcium Phosphate ◽

Laser Cladding ◽

Titanium Substrate ◽

Phosphate Coatings ◽

Calcium Phosphate Coatings

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Bioactivity Assessment of Calcium Phosphate Coatings

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.720.193 ◽

2016 ◽

Vol 720 ◽

pp. 193-196

Author(s):

Daniel Navarro da Rocha ◽

Leila Rosa de Oliveira Cruz ◽

Dindo Q. Mijares ◽

Rubens Lincoln Santana Blazutti Marçal ◽

José Brant de Campos ◽

...

Keyword(s):

Calcium Phosphate ◽

Titanium Substrate ◽

Chemical Deposition ◽

Hydroxyapatite Coating ◽

Deposition Method ◽

Phosphate Coatings ◽

Chemical Deposition Method ◽

Calcium Phosphate Coatings

Nowadays, bioactive coatings or modifications on titanium surface have been tested in vitro and in vivo. In this study, two types of calcium phosphate coatings were produced by a chemical deposition method and their bioactivity assay in cell culture medium were investigated. The calcium phosphate coatings were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy with field emission gun (FEG-SEM) analyses. Titanium substrate was successfully coated with brushite using chemical deposition method and, after a second step of conversion, the hydroxyapatite coating was obtained. The hydroxyapatite coating showed a bioactivity property after 14 days’ incubation in McCoy medium culture.

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Investigation of the adhesion properties of calcium-phosphate coating to titanium substrate with regards to the parameters of high-frequency magnetron sputtering

Acta of Bioengineering and Biomechanics ◽

10.37190/abb-01544-2020-02 ◽

2020 ◽

Vol 22 (2) ◽

Author(s):

Aidar K. Kenzhegulov ◽

Axaule A. Mamaeva ◽

Alexander V. Panichkin ◽

Konstantin A. Prosolov ◽

Anna Brończyk ◽

...

Keyword(s):

Calcium Phosphate ◽

Magnetron Sputtering ◽

High Frequency ◽

Titanium Substrate ◽

Specific Power ◽

Calcium Phosphate Coating ◽

Phosphate Coating ◽

Adhesion Properties ◽

Phosphate Coatings ◽

Calcium Phosphate Coatings

Purpose: The main goal of the work was to find the interconnection between the high-frequency magnetron sputtering parameters and the adhesion properties of CaP coatings formed on the surface of titanium substrate. Methods: Calcium-phosphate coatings, similar in composition to hydroxyapatite, were generated by high-frequency magnetron sputtering on titanium substrate at different values of high-frequency specific power over times of one and two hours. Afterwards, the generated coatings were studied using the method of X-ray phase analysis, and sclerometric tests (scratch test) were carried out. The adhesion strength of the deposited coatings was tested for different coating thicknesses from 0.45 to 1.1 × 10–3 mm. Results: According to the results of sclerometry, it was found that with an increase in the high-frequency specific power of plasma to 3.15 W/cm2, the adhesion strength of the calcium-phosphate coating also increases. For all the coatings, the critical loads at which the coating completely exfoliated from the substrate were determined. Conclusions: According to the research results, the most optimal conditions for obtaining high-adhesive calcium-phosphate coatings were determined.

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