Thin Sol-Gel-Derived Silica-Coatings on CP-Titania and Bioactivity Thereupon

Issue title: A Selection of Papers from the International Symposium on Advanced Bio-Materials and Engineering '93 (ISABE '93)

Article type: Research Article

Authors: Nordström, E.G. | Södergård, B.E. | Kukkonen, L.

Affiliations: Laboratory for Inorganic Chemistry, Åbo Akademi University, SF-20500 Åbo, Finland

Abstract: Silica-coatings prepared by sol-gel method was coated on CP-titania cones and discs. Thin coatings of less than approximately 0.3 μm were produced, The greatest advantage with the Si-gel coatings is that the densification of the gel takes place at already 500°C, thus not changing the character of the metal surface. The coatings showed to passivate the surface of the CP-titania specimen, provided that the thickness did not exceed 0.3 μm. That seemed to be the critical thickness for a smooth and intact coating. Thicker coatings of Si-gel scales easily off.

Keywords: bioactive, coatings, titania, sol-gel

DOI: 10.3233/BME-1994-4306

Journal: Bio-Medical Materials and Engineering, vol. 4, no. 3, pp. 187-192, 1994