Electrochemical deposition of calcium phosphate coatings on titanium was performed galvanostatically from the aqueous solution of Ca(NO3)(2) and NH4H2PO4 with the current densities between 5.0 and 10 mA cm(-2), for different deposition times, at room temperature. The coatings were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The XRD results showed that dicalcium phosphate dihydrate (DCPD), brushite (CaHPO4 center dot 2H(2)O) coatings were deposited. The influence of applied current density and the deposition time on the phase composition, crystallite domain size and the morphology of brushite coatings were investigated. It was shown that brushite coating of the greatest mass was obtained for the longest deposition time, while the increase in current density over 7 mA cm(-2) does not affect significantly the mass of brushite coatings. The finest crystallites, with the smallest crystallite domain size of 15.6nm, were deposited at the current density of... 9.0 mA cm(-2). Brushite coatings were fully converted to hydroxyapatite in simulated body fluid (SBF) which was confirmed by XRD and SEM. The crystallite domain size of HA coatings is controlled by applied current density for brushite coatings deposition: crystallization of HA at more porous brushite coatings, deposited at higher current density, caused the formation of smaller crystallites of hydroxyapatite.
TY - JOUR
AU - Djosic, M. S.
AU - Panić, Vladimir
AU - Stojanovic, J.
AU - Mitrić, Miodrag
AU - Mišković-Stanković, Vesna
PY - 2012
UR - http://cer.ihtm.bg.ac.rs/handle/123456789/950
AB - Electrochemical deposition of calcium phosphate coatings on titanium was performed galvanostatically from the aqueous solution of Ca(NO3)(2) and NH4H2PO4 with the current densities between 5.0 and 10 mA cm(-2), for different deposition times, at room temperature. The coatings were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The XRD results showed that dicalcium phosphate dihydrate (DCPD), brushite (CaHPO4 center dot 2H(2)O) coatings were deposited. The influence of applied current density and the deposition time on the phase composition, crystallite domain size and the morphology of brushite coatings were investigated. It was shown that brushite coating of the greatest mass was obtained for the longest deposition time, while the increase in current density over 7 mA cm(-2) does not affect significantly the mass of brushite coatings. The finest crystallites, with the smallest crystallite domain size of 15.6nm, were deposited at the current density of 9.0 mA cm(-2). Brushite coatings were fully converted to hydroxyapatite in simulated body fluid (SBF) which was confirmed by XRD and SEM. The crystallite domain size of HA coatings is controlled by applied current density for brushite coatings deposition: crystallization of HA at more porous brushite coatings, deposited at higher current density, caused the formation of smaller crystallites of hydroxyapatite.
PB - Elsevier Science Bv, Amsterdam
T2 - Colloids and Surfaces A-Physicochemical and Engineering Aspects
T1 - The effect of applied current density on the surface morphology of deposited calcium phosphate coatings on titanium
VL - 400
SP - 36
EP - 43
DO - 10.1016/j.colsurfa.2012.02.040
ER -
@article{
author = "Djosic, M. S. and Panić, Vladimir and Stojanovic, J. and Mitrić, Miodrag and Mišković-Stanković, Vesna",
year = "2012",
url = "http://cer.ihtm.bg.ac.rs/handle/123456789/950",
abstract = "Electrochemical deposition of calcium phosphate coatings on titanium was performed galvanostatically from the aqueous solution of Ca(NO3)(2) and NH4H2PO4 with the current densities between 5.0 and 10 mA cm(-2), for different deposition times, at room temperature. The coatings were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The XRD results showed that dicalcium phosphate dihydrate (DCPD), brushite (CaHPO4 center dot 2H(2)O) coatings were deposited. The influence of applied current density and the deposition time on the phase composition, crystallite domain size and the morphology of brushite coatings were investigated. It was shown that brushite coating of the greatest mass was obtained for the longest deposition time, while the increase in current density over 7 mA cm(-2) does not affect significantly the mass of brushite coatings. The finest crystallites, with the smallest crystallite domain size of 15.6nm, were deposited at the current density of 9.0 mA cm(-2). Brushite coatings were fully converted to hydroxyapatite in simulated body fluid (SBF) which was confirmed by XRD and SEM. The crystallite domain size of HA coatings is controlled by applied current density for brushite coatings deposition: crystallization of HA at more porous brushite coatings, deposited at higher current density, caused the formation of smaller crystallites of hydroxyapatite.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Colloids and Surfaces A-Physicochemical and Engineering Aspects",
title = "The effect of applied current density on the surface morphology of deposited calcium phosphate coatings on titanium",
volume = "400",
pages = "36-43",
doi = "10.1016/j.colsurfa.2012.02.040"
}
Djosic MS, Panić V, Stojanovic J, Mitrić M, Mišković-Stanković V. The effect of applied current density on the surface morphology of deposited calcium phosphate coatings on titanium. Colloids and Surfaces A-Physicochemical and Engineering Aspects. 2012;400:36-43
Djosic, M. S., Panić, V., Stojanovic, J., Mitrić, M.,& Mišković-Stanković, V. (2012). The effect of applied current density on the surface morphology of deposited calcium phosphate coatings on titanium.
Colloids and Surfaces A-Physicochemical and Engineering AspectsElsevier Science Bv, Amsterdam., 400, 36-43.
https://doi.org/10.1016/j.colsurfa.2012.02.040
Djosic M. S., Panić Vladimir, Stojanovic J., Mitrić Miodrag, Mišković-Stanković Vesna, "The effect of applied current density on the surface morphology of deposited calcium phosphate coatings on titanium" 400 (2012):36-43,
https://doi.org/10.1016/j.colsurfa.2012.02.040 .
