title: Biomineralization capability of adherent bio-glass films prepared by magnetron sputtering.
abstract: Radiofrequency magnetron sputtering deposition at low temperature (150 degrees C) was used to deposit bioactive glass coatings onto titanium substrates. Three different working atmospheres were used: Ar 100%, Ar + 7%O(2), and Ar + 20%O(2). The preliminary adhesion tests (pull-out) produced excellent adhesion values (approximately 75 MPa) for the as-deposited bio-glass films. Bioactivity tests in simulated body fluid were carried out for 30 days. SEM-EDS, XRD and FTIR measurements were performed. The tests clearly showed strong bioactive features for all the prepared films. The best biomineralization capability, expressed by the thickest chemically grown carbonated hydroxyapatite layer, was obtained for the bio-glass coating sputtered in a reactive atmosphere with 7% O(2).
authors.affiliation: National Institute of Materials Physics, Bucharest-Magurele, Romania, george_stan@infim.ro
authors.forename: G E
authors.initials: GE
authors.lastname: Stan
authors.forename: S
authors.initials: S
authors.lastname: Pina
authors.forename: D U
authors.initials: DU
authors.lastname: Tulyaganov
authors.forename: J M F
authors.initials: JM
authors.lastname: Ferreira
authors.forename: I
authors.initials: I
authors.lastname: Pasuk
authors.forename: C O
authors.initials: CO
authors.lastname: Morosanu
mesh_terms: D000268:Adhesiveness / Q000187:drug effects; D018786:Bone Substitutes / Q000737:chemistry / Q000494:pharmacology*; D002113:Calcification, Physiologic / Q000187:drug effects / Q000502:physiology*; D002516:Ceramics / Q000737:chemistry / Q000494:pharmacology*; D020099:Coated Materials, Biocompatible / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D004595:Electroplating / Q000295:instrumentation / Q000379:methods*; D008422:Materials Testing; D008567:Membranes, Artificial; D010012:Osteogenesis / Q000187:drug effects; D010100:Oxygen / Q000494:pharmacology; D017550:Spectroscopy, Fourier Transform Infrared; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry
chemical_list: C022107:Bioglass; D018786:Bone Substitutes; D020099:Coated Materials, Biocompatible; D008567:Membranes, Artificial; D014025:Titanium; D010100:Oxygen