The effect of applied current density on the surface morphology of deposited calcium phosphate coatings on titanium
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. (C) 2012 Elsevier B.V. All rights reserved.
Keywords:
Brushite / Hydroxyapatite / Biomaterials / Nanostructures / Electrochemical depositionSource:
Colloids and Surfaces. A: Physicochemical and Engineering Aspects, 2012, 400, 36-43Funding / projects:
- Synthesis, processing and applications of nanostructured multifunctional materials with defined properties (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45019)
DOI: 10.1016/j.colsurfa.2012.02.040
ISSN: 0927-7757
WoS: 000303906900005
Scopus: 2-s2.0-84859508092
Collections
Institution/Community
VinčaTY - JOUR AU - Djosic, M. S. AU - Panić, Vladimir AU - Stojanovic, J. AU - Mitrić, Miodrag AU - Mišković-Stanković, Vesna B. PY - 2012 UR - https://vinar.vin.bg.ac.rs/handle/123456789/4840 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. (C) 2012 Elsevier B.V. All rights reserved. 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 B.", year = "2012", 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. (C) 2012 Elsevier B.V. All rights reserved.", 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, M. S., Panić, V., Stojanovic, J., Mitrić, M.,& Mišković-Stanković, V. B.. (2012). The effect of applied current density on the surface morphology of deposited calcium phosphate coatings on titanium. in Colloids and Surfaces. A: Physicochemical and Engineering Aspects, 400, 36-43. https://doi.org/10.1016/j.colsurfa.2012.02.040
Djosic MS, Panić V, Stojanovic J, Mitrić M, Mišković-Stanković VB. The effect of applied current density on the surface morphology of deposited calcium phosphate coatings on titanium. in Colloids and Surfaces. A: Physicochemical and Engineering Aspects. 2012;400:36-43. doi:10.1016/j.colsurfa.2012.02.040 .
Djosic, M. S., Panić, Vladimir, Stojanovic, J., Mitrić, Miodrag, Mišković-Stanković, Vesna B., "The effect of applied current density on the surface morphology of deposited calcium phosphate coatings on titanium" in Colloids and Surfaces. A: Physicochemical and Engineering Aspects, 400 (2012):36-43, https://doi.org/10.1016/j.colsurfa.2012.02.040 . .