TY  - JOUR
AU  - Jokanović, Vukoman R.
AU  - Vilotijević, Miroljub N.
AU  - Čolović, Božana M.
AU  - Jenko, Monika
AU  - Anzel, Ivan
AU  - Rudolf, Rebeka
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/334
AB  - Hydroxyapatite (HA) coatings were deposited on high purity titanium substrate by atmospheric plasma spraying (APS) with high electric energy input. Previously, the surface of the titanium was prepared by alkali etching with NaOH and subsequent diverse thermal treatments. The phase composition, structure and morphology of the nano-structured HA coatings were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Auger electron spectroscopy (AES). The XRD pattern showed that the coatings deposited by APS consisted mainly of HA with crystallite sizes between 15.5 and 31 nm and small quantities of the amorphous HA phase. The SEM observation showed that the as-deposited coatings had very different morphology with typical features of micro-structural patterns, which are desirable for improving the biological performances of HA coatings. AES analysis of various spots of the titanium substrate-coating interface showed the presence of an oxide layer with implanted Ca ions owing to the high kinetic energy of the plasma jet. This layer caused a significant increase in the measured adhesive strength, showing values in the range of 51.8-62.5 MPa. The sintering mechanism was studied using several approaches that show that the dominant sintering mechanism was volume diffusion.
T2  - Plasma Chemistry and Plasma Processing
T1  - Enhanced Adhesion Properties, Structure and Sintering Mechanism of Hydroxyapatite Coatings Obtained by Plasma Jet Deposition
VL  - 35
IS  - 1
SP  - 1
EP  - 19
DO  - 10.1007/s11090-014-9599-0
ER  - 

@article{
author = "Jokanović, Vukoman R. and Vilotijević, Miroljub N. and Čolović, Božana M. and Jenko, Monika and Anzel, Ivan and Rudolf, Rebeka",
year = "2015",
abstract = "Hydroxyapatite (HA) coatings were deposited on high purity titanium substrate by atmospheric plasma spraying (APS) with high electric energy input. Previously, the surface of the titanium was prepared by alkali etching with NaOH and subsequent diverse thermal treatments. The phase composition, structure and morphology of the nano-structured HA coatings were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Auger electron spectroscopy (AES). The XRD pattern showed that the coatings deposited by APS consisted mainly of HA with crystallite sizes between 15.5 and 31 nm and small quantities of the amorphous HA phase. The SEM observation showed that the as-deposited coatings had very different morphology with typical features of micro-structural patterns, which are desirable for improving the biological performances of HA coatings. AES analysis of various spots of the titanium substrate-coating interface showed the presence of an oxide layer with implanted Ca ions owing to the high kinetic energy of the plasma jet. This layer caused a significant increase in the measured adhesive strength, showing values in the range of 51.8-62.5 MPa. The sintering mechanism was studied using several approaches that show that the dominant sintering mechanism was volume diffusion.",
journal = "Plasma Chemistry and Plasma Processing",
title = "Enhanced Adhesion Properties, Structure and Sintering Mechanism of Hydroxyapatite Coatings Obtained by Plasma Jet Deposition",
volume = "35",
number = "1",
pages = "1-19",
doi = "10.1007/s11090-014-9599-0"
}

Jokanović, V. R., Vilotijević, M. N., Čolović, B. M., Jenko, M., Anzel, I.,& Rudolf, R.. (2015). Enhanced Adhesion Properties, Structure and Sintering Mechanism of Hydroxyapatite Coatings Obtained by Plasma Jet Deposition. in Plasma Chemistry and Plasma Processing, 35(1), 1-19.
https://doi.org/10.1007/s11090-014-9599-0

Jokanović VR, Vilotijević MN, Čolović BM, Jenko M, Anzel I, Rudolf R. Enhanced Adhesion Properties, Structure and Sintering Mechanism of Hydroxyapatite Coatings Obtained by Plasma Jet Deposition. in Plasma Chemistry and Plasma Processing. 2015;35(1):1-19.
doi:10.1007/s11090-014-9599-0 .

Jokanović, Vukoman R., Vilotijević, Miroljub N., Čolović, Božana M., Jenko, Monika, Anzel, Ivan, Rudolf, Rebeka, "Enhanced Adhesion Properties, Structure and Sintering Mechanism of Hydroxyapatite Coatings Obtained by Plasma Jet Deposition" in Plasma Chemistry and Plasma Processing, 35, no. 1 (2015):1-19,
https://doi.org/10.1007/s11090-014-9599-0 . .

TY  - JOUR
AU  - Rudolf, Rebeka
AU  - Stamenkovic, Dragoslav
AU  - Aleksić, Zoran
AU  - Jenko, Monika
AU  - Dordevic, Igor
AU  - Todorović, Aleksandar
AU  - Jokanović, Vukoman R.
AU  - Raic, Karlo T.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/427
AB  - Thin hydroxyapatite coatings were produced on Cp-Titanium Grade-2 samples, with new high-voltage pulse-power equipment PJ-100 (Plasma Jet, Serbia) in order to get a more stable implant structure appropriate for further clinical applications. A comparative analysis of differently prepared surfaces of the Cp-Titanium Grade-2 samples was done before the hydroxyapatite was applied. Microstructural observation of the modified hydroxyapatite/implant surface was done using scanning-electron-microscopy imaging and Auger electron spectroscopy, with the aim of detecting the morphology and the elements contained in the new surfaces of the samples. The results confirmed that the surface of Cp-Titanium Grade-2 modified with hydroxyapatite is very similar to the bone structure.
T2  - Materials and Technology = Materiali in Tehnologije
T1  - Hydroxyapatite Coatings on Cp-Titanium Grade-2 Surfaces Prepared with Plasma Spraying
VL  - 49
IS  - 1
SP  - 81
EP  - 86
UR  - https://hdl.handle.net/21.15107/rcub_vinar_427
ER  - 

@article{
author = "Rudolf, Rebeka and Stamenkovic, Dragoslav and Aleksić, Zoran and Jenko, Monika and Dordevic, Igor and Todorović, Aleksandar and Jokanović, Vukoman R. and Raic, Karlo T.",
year = "2015",
abstract = "Thin hydroxyapatite coatings were produced on Cp-Titanium Grade-2 samples, with new high-voltage pulse-power equipment PJ-100 (Plasma Jet, Serbia) in order to get a more stable implant structure appropriate for further clinical applications. A comparative analysis of differently prepared surfaces of the Cp-Titanium Grade-2 samples was done before the hydroxyapatite was applied. Microstructural observation of the modified hydroxyapatite/implant surface was done using scanning-electron-microscopy imaging and Auger electron spectroscopy, with the aim of detecting the morphology and the elements contained in the new surfaces of the samples. The results confirmed that the surface of Cp-Titanium Grade-2 modified with hydroxyapatite is very similar to the bone structure.",
journal = "Materials and Technology = Materiali in Tehnologije",
title = "Hydroxyapatite Coatings on Cp-Titanium Grade-2 Surfaces Prepared with Plasma Spraying",
volume = "49",
number = "1",
pages = "81-86",
url = "https://hdl.handle.net/21.15107/rcub_vinar_427"
}

Rudolf, R., Stamenkovic, D., Aleksić, Z., Jenko, M., Dordevic, I., Todorović, A., Jokanović, V. R.,& Raic, K. T.. (2015). Hydroxyapatite Coatings on Cp-Titanium Grade-2 Surfaces Prepared with Plasma Spraying. in Materials and Technology = Materiali in Tehnologije, 49(1), 81-86.
https://hdl.handle.net/21.15107/rcub_vinar_427

Rudolf R, Stamenkovic D, Aleksić Z, Jenko M, Dordevic I, Todorović A, Jokanović VR, Raic KT. Hydroxyapatite Coatings on Cp-Titanium Grade-2 Surfaces Prepared with Plasma Spraying. in Materials and Technology = Materiali in Tehnologije. 2015;49(1):81-86.
https://hdl.handle.net/21.15107/rcub_vinar_427 .

Rudolf, Rebeka, Stamenkovic, Dragoslav, Aleksić, Zoran, Jenko, Monika, Dordevic, Igor, Todorović, Aleksandar, Jokanović, Vukoman R., Raic, Karlo T., "Hydroxyapatite Coatings on Cp-Titanium Grade-2 Surfaces Prepared with Plasma Spraying" in Materials and Technology = Materiali in Tehnologije, 49, no. 1 (2015):81-86,
https://hdl.handle.net/21.15107/rcub_vinar_427 .

TY  - JOUR
AU  - Jokanović, Vukoman R.
AU  - Vilotijević, Miroljub N.
AU  - Jokanović, Bojan
AU  - Jenko, Monika
AU  - Anzel, Ivan
AU  - Stamenkovic, Dragoslav
AU  - Lazić, Vojkan
AU  - Rudolf, Rebeka
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5936
AB  - In this research, the structure changes along the depth gradient layers of titanium substrate, after etching with NaOH and subsequent thermal treatment at various temperatures between 300 and 800 degrees C, were investigated by XRD, FTIR and AES. Particularly, the changes of Ti substrate after etching with NaOH, subsequent ionic exchange of Na+ with Ca2+ ions and thermal treatment at 700 degrees C were analysed. Due to this approach, it was possible to get insight into the chemical changes and changes of Ti oxidation states and consequent phase analysis, along the depth of the titanium oxide coatings. In addition, Secondary Electron Imaging (SEI) showed very interesting nanotopology of all samples. Particularly interesting topology, consisting of very thin nano-designed walls between mutually interconnected pores, was observed for the sample in which Na+ were replaced with Ca2+ ions. This structure might be suitable for deposition of hydroxyapatite by biomimetic or plasma methods and as an appropriate scaffold for cell adhesion and proliferation. (C) 2014 Elsevier Ltd. All rights reserved.
T2  - Corrosion Science
T1  - Investigations of corrosion on the surface of titanium substrate caused by combined alkaline and heat treatment
VL  - 82
SP  - 180
EP  - 190
DO  - 10.1016/j.corsci.2014.01.014
ER  - 

@article{
author = "Jokanović, Vukoman R. and Vilotijević, Miroljub N. and Jokanović, Bojan and Jenko, Monika and Anzel, Ivan and Stamenkovic, Dragoslav and Lazić, Vojkan and Rudolf, Rebeka",
year = "2014",
abstract = "In this research, the structure changes along the depth gradient layers of titanium substrate, after etching with NaOH and subsequent thermal treatment at various temperatures between 300 and 800 degrees C, were investigated by XRD, FTIR and AES. Particularly, the changes of Ti substrate after etching with NaOH, subsequent ionic exchange of Na+ with Ca2+ ions and thermal treatment at 700 degrees C were analysed. Due to this approach, it was possible to get insight into the chemical changes and changes of Ti oxidation states and consequent phase analysis, along the depth of the titanium oxide coatings. In addition, Secondary Electron Imaging (SEI) showed very interesting nanotopology of all samples. Particularly interesting topology, consisting of very thin nano-designed walls between mutually interconnected pores, was observed for the sample in which Na+ were replaced with Ca2+ ions. This structure might be suitable for deposition of hydroxyapatite by biomimetic or plasma methods and as an appropriate scaffold for cell adhesion and proliferation. (C) 2014 Elsevier Ltd. All rights reserved.",
journal = "Corrosion Science",
title = "Investigations of corrosion on the surface of titanium substrate caused by combined alkaline and heat treatment",
volume = "82",
pages = "180-190",
doi = "10.1016/j.corsci.2014.01.014"
}

Jokanović, V. R., Vilotijević, M. N., Jokanović, B., Jenko, M., Anzel, I., Stamenkovic, D., Lazić, V.,& Rudolf, R.. (2014). Investigations of corrosion on the surface of titanium substrate caused by combined alkaline and heat treatment. in Corrosion Science, 82, 180-190.
https://doi.org/10.1016/j.corsci.2014.01.014

Jokanović VR, Vilotijević MN, Jokanović B, Jenko M, Anzel I, Stamenkovic D, Lazić V, Rudolf R. Investigations of corrosion on the surface of titanium substrate caused by combined alkaline and heat treatment. in Corrosion Science. 2014;82:180-190.
doi:10.1016/j.corsci.2014.01.014 .

Jokanović, Vukoman R., Vilotijević, Miroljub N., Jokanović, Bojan, Jenko, Monika, Anzel, Ivan, Stamenkovic, Dragoslav, Lazić, Vojkan, Rudolf, Rebeka, "Investigations of corrosion on the surface of titanium substrate caused by combined alkaline and heat treatment" in Corrosion Science, 82 (2014):180-190,
https://doi.org/10.1016/j.corsci.2014.01.014 . .