Relationship between plasma spray operational parameters and microstructure of hydroxyapatite coatings and powder particles sprayed into water

A full factorial design of 2 4 experiments was used to determine the effects of four principal plasma spray parameters (i.e., plasma forming gas composition, electric power, spraying distance, and carrier gas flow rate on the microstructure of hydroxyapatite (HA) coatings and powders). The granulome...

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Bibliographic Details
Published in:Surface & coatings technology 2006-03, Vol.200 (12), p.3845-3855
Main Authors: Dyshlovenko, S., Pawlowski, L., Roussel, P., Murano, D., Le Maguer, A.
Format: Article
Language:English
Subjects:
Ceramics structure
Chemical Sciences
FTIR
Hydroxyapatite coating
Material chemistry
Plasma spraying
Statistical design of experiments
XRD
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Summary:A full factorial design of 2 4 experiments was used to determine the effects of four principal plasma spray parameters (i.e., plasma forming gas composition, electric power, spraying distance, and carrier gas flow rate on the microstructure of hydroxyapatite (HA) coatings and powders). The granulometry of powders was tested after spraying into water and compared to the initial one. The crystal phase content of powders and coatings was determined using quantitative X-ray diffraction (XRD) analysis. The morphologies of coatings surfaces, cross-sections, and particles sprayed into water were characterized using scanning electron microscopy (SEM). The mapping of elements inside plasma-treated powders was carried out using electron microprobe analysis (EMPA). Infrared spectroscopy (FTIR) allowed determination of the dehydration of HA under different spray conditions.
ISSN:0257-8972
1879-3347
DOI:10.1016/j.surfcoat.2004.11.037