Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/41603

Title

In vitro testing of plasma-sprayed hydroxyapatite coatings

Author(s)

Gross, Karlis A.;  Berndt, Christopher C.

Abstract

Hydroxyapatite-coated coupons were tested in various physiological media. Immersion in Ringer's solution showed that heat-treated coatings displayed a weight gain but the as-sprayed coatings underwent a weight loss. Dissolution of the coating was measured by weighing the specimen before and after ageing. Immersion of hydroxyapatite coatings showed the appearance of small spheres that were identified by X-ray diffraction as hydroxyapatite. Changes in coating morphology were detected and the coating degradation mechanisms are discussed. This paper thus looks at the morphology, composition, crystallinity and dissolution of hydroxyapatite coatings aged in Ringer's solution. Hydroxyapatite-coated coupons were tested in various physiological media, immersion in Ringer's solution showed that heat-treated coatings displayed a weight gain but the as-sprayed coatings underwent a weight loss. Dissolution of the coating was measured by weighing the specimen before and after ageing. Immersion of hydroxyapatite coatings showed the appearance of small spheres that were identified by X-ray diffraction as hydroxyapatite. Changes in coating morphology were detected and the coating degradation mechanisms are discussed. This paper thus looks at the morphology, composition, crystallinity and dissolution of hydroxyapatite coatings aged in Ringer's solutions.

Publication type

Journal article

Source

Journal of Materials Science: Materials in Medicine, Vol. 5, no. 4 (Apr 1994), pp. 219-224

Publication year

1994

Keyword(s)

Biocompatibility;  Biomaterials;  Chemical composition;  Composition;  Crystal structure;  Dissolution;  Heat treatment;  Hydroxyapatite;  Hydroxyapatite coatings;  Immersion;  In vitro testing;  Morphology;  Plasma;  Plasma sprayed coatings;  Ringer lactate solution;  Ringer's solution;  Sprayed coatings;  Weight gain;  Weight reduction;  X-ray diffraction

Publisher

Springer

ISSN

0957-4530

Publisher URL

http://dx.doi.org/10.1007/BF00121092

Copyright

Copyright © 1994 Chapman & Hall.

Peer reviewed