title: Laser cladding of bioactive glass coatings.
abstract: Laser cladding by powder injection has been used to produce bioactive glass coatings on titanium alloy (Ti6Al4V) substrates. Bioactive glass compositions alternative to 45S5 Bioglass were demonstrated to exhibit a gradual wetting angle-temperature evolution and therefore a more homogeneous deposition of the coating over the substrate was achieved. Among the different compositions studied, the S520 bioactive glass showed smoother wetting angle-temperature behavior and was successfully used as precursor material to produce bioactive coatings. Coatings processed using a Nd:YAG laser presented calcium silicate crystallization at the surface, with a uniform composition along the coating cross-section, and no significant dilution of the titanium alloy was observed. These coatings maintain similar bioactivity to that of the precursor material as demonstrated by immersion in simulated body fluid.
authors: Department of Applied Physics, ETSII, Universidad de Vigo, Lagoas-Marcosende, 36310 Vigo, Spain.
authors: R
authors: R
authors: Comesaña
authors: F
authors: F
authors: Quintero
authors: F
authors: F
authors: Lusquiños
authors: M J
authors: MJ
authors: Pascual
authors: M
authors: M
authors: Boutinguiza
authors: A
authors: A
authors: Durán
authors: J
authors: J
authors: Pou
mesh_terms: D001672:Biocompatible Materials / Q000737:chemistry*; D001826:Body Fluids / Q000737:chemistry*; D005898:Glass / Q000737:chemistry* / Q000528:radiation effects*; D007834:Lasers; D008422:Materials Testing; D017155:Wettability
chemical_list: D001672:Biocompatible Materials