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  - 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 . .