OATAO - Open Archive Toulouse Archive Ouverte Open Access Week

Synthesis of fluor-hydroxyapatite powder for plasma sprayed biomedical coatings: Characterization and improvement of the powder properties

Demnati, Imane and Grossin, David and Errassifi, Farid and Combes, Christèle and Rey, Christian and Le Bolay, Nadine Synthesis of fluor-hydroxyapatite powder for plasma sprayed biomedical coatings: Characterization and improvement of the powder properties. (2014) Powder Technology, vol. 255. pp. 23-28. ISSN 0032-5910

[img]
Preview
(Document in English)

PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
250kB

Official URL: http://dx.doi.org/10.1016/j.powtec.2013.10.022

Abstract

Fluor-hydroxyapatite (FHA) powder was synthesized by double decomposition in a view to produce bioactive and thermally stable coatings by plasma spray process. This work aims at studying the influence of chemical composition, microstructure and surface energy on the flowability of the FHA particles which is known as a determinant property during plasma spraying for the quality of the product in terms of yield and homogeneity of composition. The as-synthesized FHA powder was sieved in order to obtain two ranges of particles size: 50– 80μm and 80–100μm. The phase composition and structure and physical characteristics of FHA particles have been determined by complementary analytical techniques (X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron spectroscopy and laser granulometry). Then, the FHA flowability was determined as recommended by the European Pharmacopeia. The results showed that the 80–100μm FHA powder has a longer flow time compared to a reference hydroxyapatite powder whereas the 50–80μm FHA particles did not flow. We propose a simple treatment of the FHA particles using ethanol as solventwhich showed to significantly improve the flowability of FHA powders.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com/science/article/pii/S0032591013006268
HAL Id:hal-01073741
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS (FRANCE)
Laboratory name:
Statistics:download
Deposited By: cirimat webmestre
Deposited On:10 Oct 2014 11:09

Repository Staff Only: item control page