title: Study of the surface characteristics of magnetron-sputter calcium phosphate coatings.
abstract: Plasma-sprayed hydroxylapatite coatings on metals such as titanium have been investigated for many years and have shown a good biocompatibility when implanted in bony tissues. Radiofrequency magnetron sputtering was used as an alternative method to deposit thin films of hydroxylapatite on titanium substrates. X-ray diffraction demonstrated that the sputtered layer was crystalline with a preferred (001) crystallographic orientation with the C-axis perpendicular to the substrate surface. Scanning electron microscopy showed that the deposited films had a uniform and dense structure. The calcium phosphate ratio varied between 1.5 and 2.0, as determined by energy-dispersive X-ray analysis. The in vitro dissolution appeared to be determined by the degree of the coating's crystallinity.
authors.affiliation: University of Nijmegen, Department of Oral Function, Dental School, The Netherlands.
authors.forename: J G
authors.initials: JG
authors.lastname: Wolke
authors.forename: K
authors.initials: K
authors.lastname: van Dijk
authors.forename: H G
authors.initials: HG
authors.lastname: Schaeken
authors.forename: K
authors.initials: K
authors.lastname: de Groot
authors.forename: J A
authors.initials: JA
authors.lastname: Jansen
mesh_terms: D001672:Biocompatible Materials / Q000737:chemistry*; D016025:Bone Transplantation; D017886:Durapatite; D008855:Microscopy, Electron, Scanning; D014025:Titanium; D014961:X-Ray Diffraction
chemical_list: D001672:Biocompatible Materials; D017886:Durapatite; D014025:Titanium