Substrate preheating and structural properties of power plasma sprayed hydroxyapatite coatings
Само за регистроване кориснике
2016
Аутори
Gligorijević, Bojan R.Vilotijević, Miroljub N.
Šćepanović, Maja
Vuković, Nikola S.
Radović, Nenad A.
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The aim of the present study was to investigate the influence of substrate preheating on the structural properties of hydroxyapatite coatings (HACs) deposited by using the high power (52 kW) laminar plasma jet. The deposition experiments were performed within the 20-200 degrees C temperature range at different stand-off distances. The structural properties in the thickness direction and at the surface of the HACs were investigated by using the micro-Raman spectroscopy, scanning electron microscopy coupled with energy dispersive spectrometry, and X-ray powder diffractometry. The deposition without the preheating of the substrate produced HACs with crystallinity gradient in the thickness direction. At the stand-off distance of 80 mm, the preheating of the substrate at 200 degrees C practically eliminated the crystallinity gradient. At distances from the coating/substrate interface shorter than similar to 100 mu m, the increase of crystallinity with the preheating of the substrate was dom...inantly attributed to the recrystallization of hydroxyl-rich ACP into HA. At longer distances and higher initial substrate temperatures ( GT 100 degrees C), the crystallinity changes were negligible, whereas the recrystallization of hydroxyl-deficient ACP into oxyapatite (OA) was also possible. The X-ray diffractometry indicated the deposition conditions under which a minimum residual stress was achieved. The results of the present study strongly suggested the relation between the ACP - GT HA remystallization process and the bonding strength of the HACs. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
Кључне речи:
Hydroxyapatite coatings / Plasma spraying / Substrate preheating / Structural properties / Micro-Raman spectroscopyИзвор:
Ceramics International, 2016, 42, 1, 411-420Издавач:
- Elsevier
Финансирање / пројекти:
- Синтеза дијамантских превлака из пламена угљоводоника техником равног пламена (RS-MESTD-Technological Development (TD or TR)-34022)
- Plasma Jet Co., Serbia
DOI: 10.1016/j.ceramint.2015.08.125
ISSN: 0272-8842; 1873-3956
WoS: 000365369500046
Scopus: 2-s2.0-84945283932
Колекције
Институција/група
VinčaTY - JOUR AU - Gligorijević, Bojan R. AU - Vilotijević, Miroljub N. AU - Šćepanović, Maja AU - Vuković, Nikola S. AU - Radović, Nenad A. PY - 2016 UR - https://vinar.vin.bg.ac.rs/handle/123456789/825 AB - The aim of the present study was to investigate the influence of substrate preheating on the structural properties of hydroxyapatite coatings (HACs) deposited by using the high power (52 kW) laminar plasma jet. The deposition experiments were performed within the 20-200 degrees C temperature range at different stand-off distances. The structural properties in the thickness direction and at the surface of the HACs were investigated by using the micro-Raman spectroscopy, scanning electron microscopy coupled with energy dispersive spectrometry, and X-ray powder diffractometry. The deposition without the preheating of the substrate produced HACs with crystallinity gradient in the thickness direction. At the stand-off distance of 80 mm, the preheating of the substrate at 200 degrees C practically eliminated the crystallinity gradient. At distances from the coating/substrate interface shorter than similar to 100 mu m, the increase of crystallinity with the preheating of the substrate was dominantly attributed to the recrystallization of hydroxyl-rich ACP into HA. At longer distances and higher initial substrate temperatures ( GT 100 degrees C), the crystallinity changes were negligible, whereas the recrystallization of hydroxyl-deficient ACP into oxyapatite (OA) was also possible. The X-ray diffractometry indicated the deposition conditions under which a minimum residual stress was achieved. The results of the present study strongly suggested the relation between the ACP - GT HA remystallization process and the bonding strength of the HACs. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved. PB - Elsevier T2 - Ceramics International T1 - Substrate preheating and structural properties of power plasma sprayed hydroxyapatite coatings VL - 42 IS - 1 SP - 411 EP - 420 DO - 10.1016/j.ceramint.2015.08.125 ER -
@article{ author = "Gligorijević, Bojan R. and Vilotijević, Miroljub N. and Šćepanović, Maja and Vuković, Nikola S. and Radović, Nenad A.", year = "2016", abstract = "The aim of the present study was to investigate the influence of substrate preheating on the structural properties of hydroxyapatite coatings (HACs) deposited by using the high power (52 kW) laminar plasma jet. The deposition experiments were performed within the 20-200 degrees C temperature range at different stand-off distances. The structural properties in the thickness direction and at the surface of the HACs were investigated by using the micro-Raman spectroscopy, scanning electron microscopy coupled with energy dispersive spectrometry, and X-ray powder diffractometry. The deposition without the preheating of the substrate produced HACs with crystallinity gradient in the thickness direction. At the stand-off distance of 80 mm, the preheating of the substrate at 200 degrees C practically eliminated the crystallinity gradient. At distances from the coating/substrate interface shorter than similar to 100 mu m, the increase of crystallinity with the preheating of the substrate was dominantly attributed to the recrystallization of hydroxyl-rich ACP into HA. At longer distances and higher initial substrate temperatures ( GT 100 degrees C), the crystallinity changes were negligible, whereas the recrystallization of hydroxyl-deficient ACP into oxyapatite (OA) was also possible. The X-ray diffractometry indicated the deposition conditions under which a minimum residual stress was achieved. The results of the present study strongly suggested the relation between the ACP - GT HA remystallization process and the bonding strength of the HACs. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.", publisher = "Elsevier", journal = "Ceramics International", title = "Substrate preheating and structural properties of power plasma sprayed hydroxyapatite coatings", volume = "42", number = "1", pages = "411-420", doi = "10.1016/j.ceramint.2015.08.125" }
Gligorijević, B. R., Vilotijević, M. N., Šćepanović, M., Vuković, N. S.,& Radović, N. A.. (2016). Substrate preheating and structural properties of power plasma sprayed hydroxyapatite coatings. in Ceramics International Elsevier., 42(1), 411-420. https://doi.org/10.1016/j.ceramint.2015.08.125
Gligorijević BR, Vilotijević MN, Šćepanović M, Vuković NS, Radović NA. Substrate preheating and structural properties of power plasma sprayed hydroxyapatite coatings. in Ceramics International. 2016;42(1):411-420. doi:10.1016/j.ceramint.2015.08.125 .
Gligorijević, Bojan R., Vilotijević, Miroljub N., Šćepanović, Maja, Vuković, Nikola S., Radović, Nenad A., "Substrate preheating and structural properties of power plasma sprayed hydroxyapatite coatings" in Ceramics International, 42, no. 1 (2016):411-420, https://doi.org/10.1016/j.ceramint.2015.08.125 . .