This study presents an innovative approach towards wet chemical synthesis of hydroxyapatite bioceramics by application of alternating current (AC) electric field during the synthesis at low and intermediate temperatures. Specially designed low-cost electrical setup provided stable, reliable and modular system which supplied electric energy within the reaction volume as characterized by computer simulation of reaction conditions. Energy introduced through external excitation (alternating voltage amplitude of 10 V and frequency of 1 kHz) influenced crystallization, ionic composition, sintering behavior of hydroxyapatite powders, microstructure and final phase composition of sintered ceramics. Crystallite size in [002] crystallographic direction increased with electric field assistance regardless of the synthesis temperature. Non-isothermal sintering studies showed significantly improved densification and implied better thermal stability of powders synthesized in the presence of AC field,... shifting the Ca/P ratio towards stoichiometric one. Vibrational spectroscopy analysis indicated the role of charge, mobility and effective ionic radius of present ions in transferring the energy supplied with external field influencing further thermal stability of the crystal lattice. Microstructural investigation and phase composition analysis suggested that application of AC electric field during the synthesis of nanocrystalline hydroxyapatite improved material properties and offered potential for tailoring macro/micro-porosity with precise modulation of electrical parameters.
Keywords:
Hydroxyapatite / AC electric field / FTIR / Sintering / Phase transformation
TY - JOUR
AU - Janićijević, Željko
AU - Lukić, Miodrag J.
AU - Veselinović, Ljiljana
PY - 2016
UR - https://dais.sanu.ac.rs/123456789/15977
AB - This study presents an innovative approach towards wet chemical synthesis of hydroxyapatite bioceramics by application of alternating current (AC) electric field during the synthesis at low and intermediate temperatures. Specially designed low-cost electrical setup provided stable, reliable and modular system which supplied electric energy within the reaction volume as characterized by computer simulation of reaction conditions. Energy introduced through external excitation (alternating voltage amplitude of 10 V and frequency of 1 kHz) influenced crystallization, ionic composition, sintering behavior of hydroxyapatite powders, microstructure and final phase composition of sintered ceramics. Crystallite size in [002] crystallographic direction increased with electric field assistance regardless of the synthesis temperature. Non-isothermal sintering studies showed significantly improved densification and implied better thermal stability of powders synthesized in the presence of AC field, shifting the Ca/P ratio towards stoichiometric one. Vibrational spectroscopy analysis indicated the role of charge, mobility and effective ionic radius of present ions in transferring the energy supplied with external field influencing further thermal stability of the crystal lattice. Microstructural investigation and phase composition analysis suggested that application of AC electric field during the synthesis of nanocrystalline hydroxyapatite improved material properties and offered potential for tailoring macro/micro-porosity with precise modulation of electrical parameters.
PB - Elsevier
T2 - Materials and Design
T1 - Alternating current electric field modified synthesis of hydroxyapatite bioceramics
SP - 511
EP - 519
VL - 109
DO - 10.1016/j.matdes.2016.07.061
UR - https://hdl.handle.net/21.15107/rcub_dais_15977
ER -
@article{
author = "Janićijević, Željko and Lukić, Miodrag J. and Veselinović, Ljiljana",
year = "2016",
abstract = "This study presents an innovative approach towards wet chemical synthesis of hydroxyapatite bioceramics by application of alternating current (AC) electric field during the synthesis at low and intermediate temperatures. Specially designed low-cost electrical setup provided stable, reliable and modular system which supplied electric energy within the reaction volume as characterized by computer simulation of reaction conditions. Energy introduced through external excitation (alternating voltage amplitude of 10 V and frequency of 1 kHz) influenced crystallization, ionic composition, sintering behavior of hydroxyapatite powders, microstructure and final phase composition of sintered ceramics. Crystallite size in [002] crystallographic direction increased with electric field assistance regardless of the synthesis temperature. Non-isothermal sintering studies showed significantly improved densification and implied better thermal stability of powders synthesized in the presence of AC field, shifting the Ca/P ratio towards stoichiometric one. Vibrational spectroscopy analysis indicated the role of charge, mobility and effective ionic radius of present ions in transferring the energy supplied with external field influencing further thermal stability of the crystal lattice. Microstructural investigation and phase composition analysis suggested that application of AC electric field during the synthesis of nanocrystalline hydroxyapatite improved material properties and offered potential for tailoring macro/micro-porosity with precise modulation of electrical parameters.",
publisher = "Elsevier",
journal = "Materials and Design",
title = "Alternating current electric field modified synthesis of hydroxyapatite bioceramics",
pages = "511-519",
volume = "109",
doi = "10.1016/j.matdes.2016.07.061",
url = "https://hdl.handle.net/21.15107/rcub_dais_15977"
}
Janićijević, Ž., Lukić, M. J.,& Veselinović, L.. (2016). Alternating current electric field modified synthesis of hydroxyapatite bioceramics. in Materials and Design
Elsevier., 109, 511-519.
https://doi.org/10.1016/j.matdes.2016.07.061
https://hdl.handle.net/21.15107/rcub_dais_15977
Janićijević Ž, Lukić MJ, Veselinović L. Alternating current electric field modified synthesis of hydroxyapatite bioceramics. in Materials and Design. 2016;109:511-519.
doi:10.1016/j.matdes.2016.07.061
https://hdl.handle.net/21.15107/rcub_dais_15977 .
Janićijević, Željko, Lukić, Miodrag J., Veselinović, Ljiljana, "Alternating current electric field modified synthesis of hydroxyapatite bioceramics" in Materials and Design, 109 (2016):511-519,
https://doi.org/10.1016/j.matdes.2016.07.061 .,
https://hdl.handle.net/21.15107/rcub_dais_15977 .
