Hydroxyapatite coating on titanium by a low energy plasma spraying mini-gun

摘要: Abstract Plasma-sprayed hydroxyapatite (HA) coatings are used on metallic implants to improve osseointegration and bone growth. The purpose of this work was determine the microstructure composition HA obtained with a newly developed low energy plasma spray mini-gun employing an feedstock powder smaller granulometry than that commonly used. phase by varying number runs were examined using scanning electron microscopy, X-ray diffraction Fourier transform infrared micro-Raman spectroscopy. In all cases, results indicate presence amorphous oxyapatite in due hydroxyl group removal. No other foreign crystalline phases detected. absence attributed fast cooling rate small particles experiments amount employed mini-gun. Decomposition υ1PO4 region Raman spectra allowed semi-quantitative evaluation contents as function runs. Micro-Raman spectroscopy appears be powerful technique providing comprehensive localised information concerning calcium phosphate coatings.