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Plasma spraying induced changes of calcium phosphate ceramic characteristics and the effect onin vitro stability

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Abstract

Plasma spraying is a commonly used technique to apply thin calcium phosphate ceramic coatings. Special consideration is given to retaining the original structure of CPC particles. However, changes are possible. Thus this study focused on plasma spraying induced changes in material characteristics of commercial coatings and their influence onin vitro dissolution. All analysed coatings were found to undergo significant plasma spraying induced changes in phase composition, crystal structure, and specific surface area. The phase transformations depended on the starting particle characteristics. Specifically, β-TCP transformed to α-TCP. HA was dehydroxylated and transformed to oxyhydroxyapatite (OHA), and partly decomposed to α-TCP and tetra calcium phosphate. These transformations lead to a considerable increase ofin vitro dissolution rates at physiological pH.

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Authors and Affiliations

  1. Department of Bioengineering, University of Pennsylvania, 19104, Philadelphia, PA, USA

    S. R. Radin & P. Ducheyne

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  1. S. R. Radin
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  2. P. Ducheyne
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Radin, S.R., Ducheyne, P. Plasma spraying induced changes of calcium phosphate ceramic characteristics and the effect onin vitro stability. J Mater Sci: Mater Med 3, 33–42 (1992). https://doi.org/10.1007/BF00702942

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  • DOI: https://doi.org/10.1007/BF00702942

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