| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a film being a hydroxyl-containing metal oxide film and having such bioactivity as to induce the formation of nuclei of a calcium phosphate when it is formed on the surface of an artificial bone material (even a plastic) with high bonding strength to form a product and the product is embedded in an environment within the living body and to provide a composite material using the film. <P>SOLUTION: The metal oxide film comprises a porous structure composed of an aggregate of island metal oxide particles of a size with a mean size of 10-50nm and a height of 10-100 nm. The metal oxide film contains a metal oxide which is a complex oxide of titanium oxide, silica, and zirconium oxide and having a composition (molar ratio) of 0.3 to 0.1 SiO<SB>2</SB>, 0.2 to 0.03 TiO<SB>2</SB>, and 0.9 to 0.5. In the metal oxide film, the compound oxide contains niobium oxide, tin oxide, tantalum oxide, potassium oxide, hafnium oxide, and alumina instead of or together with the titanium oxide. The composite material comprises a substrate and the metal oxide film formed thereon. <P>COPYRIGHT: (C)2004,JPO |
