PREPARATION AND BIOLOGICAL BEHAVIOR OF α-TCP-AND HAp-COATINGS

Abstract

The coatings of α-tricalcium phosphate (α-TCP) and hydroxyapatite (HAp) were carried out on titanium plates by a plasma spraying technique. The characterizations for the α-TCP and HAp coatings were done by X-ray diffraction analysis, SEM observation, X-ray fluorescence analysis. In the HAp coatings on titanium plate, amorphous-like layers were observed for the inside layers of coating near to the substrata, while crystalline layers were observed for the coating surface. In the α-TCP coatings, the inside layer of coating had the same crystallinity as the surface layer. In vitro Cell proliferation tests of the coating layers indicated that both the α-TCP-and HAp-coatings on titanium plate had better biocompatibility than the titanium plate without coatings.