APPLICATION OF ELECTRON-BEAM PLASMA FOR SYNTHESIS OF TITANIUM OXIDES WITH IMPROVED BIOCOMPATIBILITY
Keywords:
electron-beam plasma, titanium oxide synthesis, biocompatibility, reactorAbstract
Advantages of the electron-beam plasma (EBP) for bio-medical applications were experimentally studied. The bio-active titanium oxide coatings were synthesized in the EBP of oxygen on the surface of plane titanium substrates. All EBP parameters were controlled by adjusting the beam current density and oxygen pressure. The sample temperature was within the range 250-750oC, the treatment duration was varied as well. The bioactivity of synthesized TiO2-coatings was characterized by: the water contact angle measurements and the ability to precipitate hydroxyapatite (the main inorganic component of bones) from the model solution which simulated the composition of the body fluid. The samples with plasmachemically synthesized TiO2-coatings were more hydrophilic than untreated titanium. The effect was stable during two weeks and then the degradation of the wettability began. The EBP-stimulated TiO2 synthesis improved the hydroxyapatite formation on the surface of plane titanium substrates. The EBP-stimulated TiO2 synthesis is promising technique to produce bioactive coatings on the surface of titanium medical dental and bone implants.
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