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The potential-assisted deposition as valuable tool for producing functional apatite coatings on metallic materials (CROSBI ID 204454)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Katić, Jozefina ; Metikoš-Huković, Mirjana ; Škapin, Srečo Davor ; Petravić, Mladen ; Varašanec, Marijana The potential-assisted deposition as valuable tool for producing functional apatite coatings on metallic materials // Electrochimica acta, 127 (2014), 173-179. doi: 10.1016/j.electacta.2014.01.168

Podaci o odgovornosti

Katić, Jozefina ; Metikoš-Huković, Mirjana ; Škapin, Srečo Davor ; Petravić, Mladen ; Varašanec, Marijana

engleski

The potential-assisted deposition as valuable tool for producing functional apatite coatings on metallic materials

Nitinol was coated with hydroxyapatite (HA) by the two-step method that includes electrodeposition of the calcium phosphate (brushite) film, as a precursor for the HA deposition, which is the second reaction step. This work concerns direct comparison of structural and barrier properties of the HA coatings produced by the phase transformation of brushite to HA in (i) an alkaline solution (NaOH) and (ii) a simulated body fluid solution (SBF). Chemical composition and morphology of the surface films were characterized using field emission scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction analysis (XRD) and X-ray photoelectron spectroscopy (XPS). The corrosion resistance was determined using in situ method of electrochemical impedance spectroscopy (EIS), under in vitro conditions, in order to optimize the production of bioactive HA coatings on metallic (Nitinol) implants for medical applications. The combination of advantages of the electrodeposition of the HA precursor film on the Nitinol surface and the treatment in an SBF solution, under in vitro conditions, has the potential to provide the HA coatings with the structural and microstructural homogeneity, excellent barrier properties (corrosion resistance) as well as bioactivity.

hydroxyapatite; Nitinol; potential-assisted deposition; electrochemical impedance spectroscopy; X-ray diffraction analysis

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Podaci o izdanju

127

2014.

173-179

objavljeno

0013-4686

10.1016/j.electacta.2014.01.168

Povezanost rada

Kemija

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