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Analysis of apatite deposits on substrates

โœ Scribed by Dasarathy, Harini ;Riley, Clyde ;Coble, H. Dwain

Publisher
John Wiley and Sons
Year
1993
Tongue
English
Weight
547 KB
Volume
27
Category
Article
ISSN
0021-9304

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โœฆ Synopsis

Abstract

Calcium phosphate coatings, important for medical implant applications can occur in several different phases. Because of differences in properties of these phases it is imperative to be able to identify their presence in a substrate's coating. In this study we characterized hydroxy apatite (HA) surfaces applied by four different coating procedures. Included were plasma sprayed, sputtered, a composite, and a composite overlayed with plasma sprayed. It was found that a combination of reflectance infrared and Raman spectroscopy could be utilized to make an in situ characterization of the calcium phosphate phases. It was shown that plasma sprayed and sputtered coatings of HA lost OH and thus decreased in crystallinity, while composite coatings remained unchanged from the original HA powder. ยฉ 1993 John Wiley & Sons, Inc.

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