I Demnati
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
I Demnati has a total of 5 co-authors. Here are the top co-authors by number of shared publications:
C Rey
1 shared publication- Christèle Combes
Université de Toulouse, Toulouse INP, CNRS, CIRIMAT, ENSIACET, 31030 Toulouse, France
1 shared publication - David Grossin
Univ.Toulouse, Toulouse INP, CNRS, CIRIMAT 4 Allée Emile Monso ‐ BP44362 Toulouse Cedex 4 France
1 shared publication - Iñigo Braceras
TECNALIA, Basque Research and Technology Alliance (BRTA), Mikeletegi Pasealekua 2, Donostia-San Sebastián, Spain
1 shared publication M Parco
1 shared publication
Latest Publications
- 12 September 2012
- Published by IOP Publishing in Biomedical Materials
- Vol. 7 (5) , 054101
A comparative physico-chemical study of chlorapatite and hydroxyapatite: from powders to plasma sprayed thin coatings
Due to their bioactivity and osteoconductivity, hydroxyapatite (HA) plasma sprayed coatings have been widely developed for orthopedic uses. However, the thermodynamic instability of HA leads frequently to a mixture of phases which limit the functional durability of the coating. This study investigates the plasma spraying of chlorapatite (ClA) powder, known to melt without decomposition, onto pure titanium substrates using a low energy plasma spray system (LEPS). Pure ClA powder was prepared by a solid gas reaction at 950 °C and thermogravimetric analysis showed the good thermal stability of ClA powder in the range 30-1400 °C compared to that of the HA powder. Characterization of ClA coating showed that ClA had a very high crystalline ratio and no other crystalline phase was detected in the coating. HA and ClA coatings composition, microstructure and in vitro bioactivity potential were studied, compared and discussed. In vitro SBF test on HA and ClA coatings revealed the formation of a poorly crystalline apatite on the coating surface suggesting that we could expect a good osteoconductivity especially for the ClA coating prepared by the LEPS system.
- 12 September 2012
- Published by IOP Publishing in Biomedical Materials
- Vol. 7 (5) , 054101
A comparative physico-chemical study of chlorapatite and hydroxyapatite: from powders to plasma sprayed thin coatings
Due to their bioactivity and osteoconductivity, hydroxyapatite (HA) plasma sprayed coatings have been widely developed for orthopedic uses. However, the thermodynamic instability of HA leads frequently to a mixture of phases which limit the functional durability of the coating. This study investigates the plasma spraying of chlorapatite (ClA) powder, known to melt without decomposition, onto pure titanium substrates using a low energy plasma spray system (LEPS). Pure ClA powder was prepared by a solid gas reaction at 950 °C and thermogravimetric analysis showed the good thermal stability of ClA powder in the range 30-1400 °C compared to that of the HA powder. Characterization of ClA coating showed that ClA had a very high crystalline ratio and no other crystalline phase was detected in the coating. HA and ClA coatings composition, microstructure and in vitro bioactivity potential were studied, compared and discussed. In vitro SBF test on HA and ClA coatings revealed the formation of a poorly crystalline apatite on the coating surface suggesting that we could expect a good osteoconductivity especially for the ClA coating prepared by the LEPS system.