Article ID Journal Published Year Pages File Type
1478851 Journal of the European Ceramic Society 2006 7 Pages PDF
Abstract
The results showed that the chemical properties of the coatings were determined by both physical, apparatus-related factors and chemical, solution-related parameters. By varying the processing parameters of the technique, several crystal phases and phase mixtures were obtained, ranging from carbonate-free phases such as meta- and pyrophosphates, monetite and various tricalcium phosphates to carbonate-containing phases such as various carbonate apatites and calcite. On the basis of these results, a chemical mechanism of coating formation was proposed. Essentially, the deposition of the various crystal phases was the result of an acid-base reaction between basic CO32− groups (originating from solvent decomposition reactions) and acidic HPO42− groups from an intermediate monetite (CaHPO4) phase of the CaP precipitate. The amount of carbonate incorporation (ranging from 0 to 15 wt%) determined the crystal and molecular structure of the deposited coatings.
Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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