A comparative physico-chemical study of chlorapatite and hydroxyapatite: from powders to plasma sprayed thin coatings

Autor: David Grossin, Christian Rey, Imane Demnati, I. Braceras, Christèle Combes, Maria Parco
Přispěvatelé: Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Tecnalia [Derio], Centro Investigacion Biomedica en Red Bioingenieria, Biomateriales y Nanomedicina - CIBER-BBN (SPAIN), Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - INPT (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Tecnalia (SPAIN), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Rok vydání: 2012
Předmět:
Chemical Phenomena
Matériaux et structures en mécanique
Biocompatible Materials
[SPI.MECA.MSMECA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Materials and structures in mechanics [physics.class-ph]
02 engineering and technology
01 natural sciences
Apatite
Coated Materials
Biocompatible
Drug Stability
X-Ray Diffraction
Coating
Apatites
Phase (matter)
Materials Testing
Spectroscopy
Fourier Transform Infrared
Chlorapatite
integumentary system
Characterisation
[SPI.PLASMA]Engineering Sciences [physics]/Plasmas
food and beverages
021001 nanoscience & nanotechnology
Microstructure
Body Fluids
visual_art
visual_art.visual_art_medium
lipids (amino acids
peptides
and proteins)
Powders
Crystallization
0210 nano-technology
Titanium
Thermogravimetric analysis
Materials science
Surface Properties
Biomedical Engineering
chemistry.chemical_element
Bioengineering
engineering.material
010402 general chemistry
Hydroxyapatite
Biomaterials
Humans
Thermal stability
[SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics
Thermal spraying
Metallurgy
[PHYS.MECA.MSMECA]Physics [physics]/Mechanics [physics]/Materials and structures in mechanics [physics.class-ph]
0104 chemical sciences
Durapatite
Micro et nanotechnologies/Microélectronique
chemistry
Chemical engineering
Plasmas
Plasma sprayed coating
Microscopy
Electron
Scanning
engineering
Powder Diffraction
Zdroj: Biomedical Materials
Biomedical Materials, IOP Publishing, 2012, vol. 7, pp. 1-10. ⟨10.1088/1748-6041/7/5/054101⟩
ISSN: 1748-605X
1748-6041
Popis: International audience; 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.
Databáze: OpenAIRE
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