title: Coating of hydroxyapatite on highly porous Al2O3 substrate for bone substitutes.
abstract: A thin film of hydroxyapatite (HA) was successfully coated onto a highly porous substrate of alumina by using a novel solution technique. The coated HA bonded strongly to the substrate through a glass sintering aid with an intermediate thermal expansion coefficient. The coating was also found to be microstructurally and chemically uniform on the surfaces of the interconnected pores in the matrix of the substrate. Mechanical property testing results showed that the strength of the HA-coated composite was significantly improved, indicating a high potential for structural bone substitutes in hard tissue prosthetics.
authors.affiliation: Department of Materials Science and Engineering, University of Cincinnati, Ohio, USA.
authors.forename: G
authors.initials: G
authors.lastname: Jiang
authors.forename: D
authors.initials: D
authors.lastname: Shi
mesh_terms: D000537:Aluminum Oxide; D001672:Biocompatible Materials; D018786:Bone Substitutes; D017886:Durapatite; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D014961:X-Ray Diffraction
chemical_list: D001672:Biocompatible Materials; D018786:Bone Substitutes; D017886:Durapatite; D000537:Aluminum Oxide