Article: Vitroceramic coatings on metallic supports with biomedical applications Journal: International Journal of Materials and Product Technology (IJMPT) 2000 Vol.15 No.6 pp.446-457 Abstract: Vitroceramic coatings from the oxidic system SiO2-CaO-B2O3-TiO2-R2O (R = Na and K) were applied on metallic supports (titanium and austenitic steels with high Cr and Ni contents). The coating procedure was classical enamelling. The metals were coated by either immersion or by painting over a thin layer from a mixture of frit (having the best composition for each metallic support) with a liquid mixture (triethanol amine ethyl : alcohol = 1 : 10), which was subsequently fired at the enamelling temperature. A good adherence between the two different materials has been thus achieved. Vitroceramic coating - metallic support couples were then characterized by optical microscopy (OM), electronic microscopy (EDS and WDS), and X-ray diffraction (XRD). The adherence of the vitroceramic layers onto metallic supports was tested by microhardness trials at the interface. The processes at the interface, i.e. gas bubble evolution, micropore formation, chemical bonding and diffusion, were evidenced. These coating layers can be employed as both bioactive and biocompatible materials. Inderscience Publishers - linking academia, business and industry through research

Title: Vitroceramic coatings on metallic supports with biomedical applications

Authors: M. Britchi, M. Olteanu, G. Jitianu, M. Branzei, D. Gheorghe, P. Nita

Addresses: Institute of Physical Chemistry, Romanian Academy, Bucharest, Romania. Institute of Physical Chemistry, Romanian Academy, Bucharest, Romania. Institute of Physical Chemistry, Romanian Academy, Bucharest, Romania. Science and Engineering Materials Faculty, Politehnica University, Aviation Metallurgy METAV, Bucharest, Romania. Science and Engineering Materials Faculty, Politehnica University, Aviation Metallurgy METAV, Bucharest, Romania. Aviation Metallurgy METAV S. A., Bucharest, Romania

Abstract: Vitroceramic coatings from the oxidic system SiO₂-CaO-B₂O₃-TiO₂-R₂O (R = Na and K) were applied on metallic supports (titanium and austenitic steels with high Cr and Ni contents). The coating procedure was classical enamelling. The metals were coated by either immersion or by painting over a thin layer from a mixture of frit (having the best composition for each metallic support) with a liquid mixture (triethanol amine ethyl : alcohol = 1 : 10), which was subsequently fired at the enamelling temperature. A good adherence between the two different materials has been thus achieved. Vitroceramic coating - metallic support couples were then characterized by optical microscopy (OM), electronic microscopy (EDS and WDS), and X-ray diffraction (XRD). The adherence of the vitroceramic layers onto metallic supports was tested by microhardness trials at the interface. The processes at the interface, i.e. gas bubble evolution, micropore formation, chemical bonding and diffusion, were evidenced. These coating layers can be employed as both bioactive and biocompatible materials.

Keywords: bioactive materials; biocompatible; Cr-Ni austenitic steels; enamelling process; titanium; vitroceramic coatings.

DOI: 10.1504/IJMPT.2000.001257

International Journal of Materials and Product Technology, 2000 Vol.15 No.6, pp.446-457

Published online: 01 Jul 2003 *

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Title: Vitroceramic coatings on metallic supports with biomedical applications

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