title: The influence of discharge power and heat treatment on calcium phosphate coatings prepared by RF magnetron sputtering deposition.
abstract: 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.
authors.affiliation: Department of Periodontology and Biomaterials, Radboud University Nijmegen Medical Center, PO Box 9101, 6500 HB, Nijmegen, The Netherlands.
authors.forename: Yan
authors.initials: Y
authors.lastname: Yonggang
authors.forename: J G C
authors.initials: JG
authors.lastname: Wolke
authors.forename: Li
authors.initials: L
authors.lastname: Yubao
authors.forename: J A
authors.initials: JA
authors.lastname: Jansen
mesh_terms: D018786:Bone Substitutes / Q000737:chemistry*; D002130:Calcium Phosphates / Q000737:chemistry*; D020099:Coated Materials, Biocompatible / Q000737:chemistry*; D006358:Hot Temperature; D008280:Magnetics / Q000295:instrumentation*; D008422:Materials Testing; D017550:Spectroscopy, Fourier Transform Infrared; D014961:X-Ray Diffraction
chemical_list: D018786:Bone Substitutes; D002130:Calcium Phosphates; D020099:Coated Materials, Biocompatible; C020243:calcium phosphate