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Influence of process parameters of simultaneous anodization/anaphoretic electrodeposition synthesis of hydroxyapatite/titanium oxide composite coatings on adhesion

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2019
Ignjatovic-Padova.pdf (372.0Kb)
Authors
Pantović Pavlović, Marijana R.
Pavlović, Miroslav M.
Eraković, Sanja G.
Stevanović, Jasmina S.
Ignjatović, Nenad
Panić, Vladimir V.
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Abstract
In-situ synthesis of hydroxyapatite/titanium oxide (HAp/TiO2) coating on titanium was performed via anaphoretic deposition of hydroxyapatite (HAp) and simultaneous anodization of Ti to produce highly adherent and strengthened composite coating. The influence of electric potential, time, electrolyte concentration and pH value of the anodization process on titanium surface roughness and anodization of titanium was examined, as well as influence of same process parameters on adhesion strength and compactness of composite HAp/TiO2 coatings was investigated. Prior to novel in situ method of synthesis of hydroxyapatite/titanium oxide composite coatings by simultaneous anodization/anaphoretic electrodeposition described in this manuscript, optimization of anodization process of titanium was performed. Anodization was executed under different electric potentials and different distances of counter electrodes from working electrodes, but all anodization processes had constant quantity of electri...c charge. Characterization of titanium samples, prepared from grade 6 Ti, and having rectangular contact surfaces of 10×10×0.89 mm included SEM/EDS analyses, X-ray diffraction analyses, AFM surface topography, morphology and roughness analyses and linear measurements of roughness. A chemical precipitation method was used to prepare hydroxyapatite powder by the reaction of calcium oxide (obtained by calcination of CaCO3 for 5 h at 1000 °C in air) and phosphoric acid. A stoichiometric amount of the calcium oxide was stirred in distilled water and phosphoric acid was added drop wise to the suspension in order to obtain hydroxyapatite powder, Ca10(PO4)6(OH)2. Two types of HAp coatings were prepared, in order to compare the adhesion, morphology and consistency of the HAp and composite HAp/TiO2 on Ti, namely cathaphoretic and anaphoretic coatings, respectively [1,2]. The prepared coatings were characterized by field emission scanning electron microscopy, X-ray diffraction and electron dispersive spectroscopy. Adhesion was investigated by ASTM D 3359 – 97 Test method B. Uniform and adherent HAp/TiO2 composite coating on Ti was obtained. Since smaller size of HAp crystals within highly porous coating structures is of improved binding ability to various biomolecules, our coating is expected to be of excellent coverage and compactness. The obtained coating can be good candidate for bone implants due to improved adhesion.

Keywords:
hydroxyapatite/titanium oxide (HAp/TiO2) / coatings / anaphoretic deposition / adhesion
Source:
Program and the Book of Abstracts / Giornate dell’Elettrochimica Italiana GEI 2019, 8-12 September 2019 Padova, Italy, 2019, 124-124
Publisher:
  • Padova : Societa chimica italiana, Divisione di Elettrochimica
Funding / projects:
  • New approach in designing materials for energy conversion and energy storage systems (RS-172060)
[ Google Scholar ]
Handle
https://hdl.handle.net/21.15107/rcub_dais_7008
URI
https://dais.sanu.ac.rs/123456789/7008
Collections
  • ИТН САНУ - Општа колекција / ITS SASA - General collection
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASA
TY  - CONF
AU  - Pantović Pavlović, Marijana R.
AU  - Pavlović, Miroslav M.
AU  - Eraković, Sanja G.
AU  - Stevanović, Jasmina S.
AU  - Ignjatović, Nenad
AU  - Panić, Vladimir V.
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/7008
AB  - In-situ synthesis of hydroxyapatite/titanium oxide (HAp/TiO2) coating on titanium was performed via anaphoretic deposition of hydroxyapatite (HAp) and simultaneous anodization of Ti to produce highly adherent and strengthened composite coating. The influence of electric potential, time, electrolyte concentration and pH value of the anodization process on titanium surface roughness and anodization of titanium was examined, as well as influence of same process parameters on adhesion strength and compactness of composite HAp/TiO2 coatings was investigated. Prior to novel in situ method of synthesis of hydroxyapatite/titanium oxide composite coatings by simultaneous anodization/anaphoretic electrodeposition described in this manuscript, optimization of anodization process of titanium was performed. Anodization was executed under different electric potentials and different distances of counter electrodes from working electrodes, but all anodization processes had constant quantity of electric charge. Characterization of titanium samples, prepared from grade 6 Ti, and having rectangular contact surfaces of 10×10×0.89 mm included SEM/EDS analyses, X-ray diffraction analyses, AFM surface topography, morphology and roughness analyses and linear measurements of roughness.
A chemical precipitation method was used to prepare hydroxyapatite powder by the reaction of calcium oxide (obtained by calcination of CaCO3 for 5 h at 1000 °C in air) and phosphoric acid. A stoichiometric amount of the calcium oxide was stirred in distilled water and phosphoric acid was added drop wise to the suspension in order to obtain hydroxyapatite powder, Ca10(PO4)6(OH)2.
Two types of HAp coatings were prepared, in order to compare the adhesion, morphology and consistency of the HAp and composite HAp/TiO2 on Ti, namely cathaphoretic and anaphoretic coatings, respectively [1,2]. The prepared coatings were characterized by field emission scanning electron microscopy, X-ray diffraction and electron dispersive spectroscopy. Adhesion was investigated by ASTM D 3359 – 97 Test method B. Uniform and adherent HAp/TiO2 composite coating on Ti was obtained. Since smaller size of HAp crystals within highly porous coating structures is of improved binding ability to various biomolecules, our coating is expected to be of excellent coverage and compactness. The obtained coating can be good candidate for bone implants due to improved adhesion.
PB  - Padova : Societa chimica italiana, Divisione di Elettrochimica
C3  - Program and the Book of Abstracts / Giornate dell’Elettrochimica Italiana GEI 2019, 8-12 September 2019 Padova, Italy
T1  - Influence of process parameters of simultaneous anodization/anaphoretic electrodeposition synthesis of hydroxyapatite/titanium oxide composite coatings on adhesion
SP  - 124
EP  - 124
UR  - https://hdl.handle.net/21.15107/rcub_dais_7008
ER  - 
@conference{
author = "Pantović Pavlović, Marijana R. and Pavlović, Miroslav M. and Eraković, Sanja G. and Stevanović, Jasmina S. and Ignjatović, Nenad and Panić, Vladimir V.",
year = "2019",
abstract = "In-situ synthesis of hydroxyapatite/titanium oxide (HAp/TiO2) coating on titanium was performed via anaphoretic deposition of hydroxyapatite (HAp) and simultaneous anodization of Ti to produce highly adherent and strengthened composite coating. The influence of electric potential, time, electrolyte concentration and pH value of the anodization process on titanium surface roughness and anodization of titanium was examined, as well as influence of same process parameters on adhesion strength and compactness of composite HAp/TiO2 coatings was investigated. Prior to novel in situ method of synthesis of hydroxyapatite/titanium oxide composite coatings by simultaneous anodization/anaphoretic electrodeposition described in this manuscript, optimization of anodization process of titanium was performed. Anodization was executed under different electric potentials and different distances of counter electrodes from working electrodes, but all anodization processes had constant quantity of electric charge. Characterization of titanium samples, prepared from grade 6 Ti, and having rectangular contact surfaces of 10×10×0.89 mm included SEM/EDS analyses, X-ray diffraction analyses, AFM surface topography, morphology and roughness analyses and linear measurements of roughness.
A chemical precipitation method was used to prepare hydroxyapatite powder by the reaction of calcium oxide (obtained by calcination of CaCO3 for 5 h at 1000 °C in air) and phosphoric acid. A stoichiometric amount of the calcium oxide was stirred in distilled water and phosphoric acid was added drop wise to the suspension in order to obtain hydroxyapatite powder, Ca10(PO4)6(OH)2.
Two types of HAp coatings were prepared, in order to compare the adhesion, morphology and consistency of the HAp and composite HAp/TiO2 on Ti, namely cathaphoretic and anaphoretic coatings, respectively [1,2]. The prepared coatings were characterized by field emission scanning electron microscopy, X-ray diffraction and electron dispersive spectroscopy. Adhesion was investigated by ASTM D 3359 – 97 Test method B. Uniform and adherent HAp/TiO2 composite coating on Ti was obtained. Since smaller size of HAp crystals within highly porous coating structures is of improved binding ability to various biomolecules, our coating is expected to be of excellent coverage and compactness. The obtained coating can be good candidate for bone implants due to improved adhesion.",
publisher = "Padova : Societa chimica italiana, Divisione di Elettrochimica",
journal = "Program and the Book of Abstracts / Giornate dell’Elettrochimica Italiana GEI 2019, 8-12 September 2019 Padova, Italy",
title = "Influence of process parameters of simultaneous anodization/anaphoretic electrodeposition synthesis of hydroxyapatite/titanium oxide composite coatings on adhesion",
pages = "124-124",
url = "https://hdl.handle.net/21.15107/rcub_dais_7008"
}
Pantović Pavlović, M. R., Pavlović, M. M., Eraković, S. G., Stevanović, J. S., Ignjatović, N.,& Panić, V. V.. (2019). Influence of process parameters of simultaneous anodization/anaphoretic electrodeposition synthesis of hydroxyapatite/titanium oxide composite coatings on adhesion. in Program and the Book of Abstracts / Giornate dell’Elettrochimica Italiana GEI 2019, 8-12 September 2019 Padova, Italy
Padova : Societa chimica italiana, Divisione di Elettrochimica., 124-124.
https://hdl.handle.net/21.15107/rcub_dais_7008
Pantović Pavlović MR, Pavlović MM, Eraković SG, Stevanović JS, Ignjatović N, Panić VV. Influence of process parameters of simultaneous anodization/anaphoretic electrodeposition synthesis of hydroxyapatite/titanium oxide composite coatings on adhesion. in Program and the Book of Abstracts / Giornate dell’Elettrochimica Italiana GEI 2019, 8-12 September 2019 Padova, Italy. 2019;:124-124.
https://hdl.handle.net/21.15107/rcub_dais_7008 .
Pantović Pavlović, Marijana R., Pavlović, Miroslav M., Eraković, Sanja G., Stevanović, Jasmina S., Ignjatović, Nenad, Panić, Vladimir V., "Influence of process parameters of simultaneous anodization/anaphoretic electrodeposition synthesis of hydroxyapatite/titanium oxide composite coatings on adhesion" in Program and the Book of Abstracts / Giornate dell’Elettrochimica Italiana GEI 2019, 8-12 September 2019 Padova, Italy (2019):124-124,
https://hdl.handle.net/21.15107/rcub_dais_7008 .

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