The porosity and roughness of electrodeposited calcium phosphate coatings in simulated body fluid | Zendy

Marija Djošić | Zendy; Miodrag Mitrić | Zendy; Vesna MiškovićStanković | Zendy

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The porosity and roughness of electrodeposited calcium phosphate coatings in simulated body fluid

Author(s) -

Marija Djošić,

Miodrag Mitrić,

Vesna MiškovićStanković

Publication year - 2014

Publication title -

journal of the serbian chemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.227

H-Index - 45

eISSN - 1820-7421

pISSN - 0352-5139

DOI - 10.2298/jsc140626098d

Subject(s) - simulated body fluid , brushite , dissolution , scanning electron microscope , porosity , materials science , calcium , crystallite , chemical engineering , precipitation , aqueous solution , deposition (geology) , surface roughness , phosphate , analytical chemistry (journal) , chemistry , metallurgy , composite material , chromatography , paleontology , sediment , biology , physics , organic chemistry , meteorology , engineering

Calcium phosphate coatings were electrochemically deposited on titanium from the aqueous solution of Ca(NO3)2 and NH4H2PO4 with the current density of 10 mA cm-2 for deposition time of 15 min. The obtained brushite coatings, (CaHPO4·2H2O), were converted to hydroxyapatite (HA) by soaking in simulated body fluid (SBF) for 2, 7 and 14 days. The brushite and hydroxyapatite coatings were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and atomic force microscopy (AFM). It was shown that the increase in soaking time increases the porosity, roughness and crystallite domain size of HA coatings and decreases the unit cell parameters and unit cell volume, while does not affect the HA mean pore area. The calcium and phosphorus ions concentrations in SBF were determined by atomic absorption spectroscopy (AAS) and UV-Vis spectroscopy, respectively and the mechanism of HA growth based on dissolution-precipitation was proposed. [Projekat Ministarstva nauke Republike Srbije, br. III 45019, br. III 45015 i br. OI 72004

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