The influence of discharge power and heat treatment on calcium phosphate coatings prepared by RF magnetron sputtering deposition.
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SourceJournal of Materials Science-Materials in Medicine, 18, 6, (2007), pp. 1061-1069
Article / Letter to editor
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Periodontology and Biomaterials
Journal of Materials Science-Materials in Medicine
SubjectNCMLS 1: Immunity, infection and tissue repair; NCMLS 3: Tissue engineering and pathology; UMCN 4.3: Tissue engineering and reconstructive surgery
Ca-P coatings with different Ca/P ratio and composition were successfully prepared by RF magnetron sputtering deposition. The Ca/P ratio, phase composition, structure and morphological properties were characterized by XRD, FTIR, EDS and SEM analyses. All the as-sputtered coatings were amorphous and after IR-irradiation the coatings altered into a crystalline phase. The obtained coatings had a Ca/P ratio that varied from 0.55 to 2.10 and different phase compositions or mixtures of apatite, beta-pyrophosphate and beta-tricalciumphosphate structures were formed. Evidently, the phase compositions of the sputtered coatings are determined not only by the discharge power ratio of the hydroxylapatite and calcium pyrophosphate targets but also by the annealing temperature.
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