| 摘要 |
<p>The invention relates to materials made of thin hydrophilic bio-active bio-compatible layers, as oxides-based monolayers resistant to corrosion, adherent to the support, used for coating titanium alloys the orthopedic implants are made of, obtained by a deposition method in the physical vapour stage such as the magnetron sputtering or cathodic arc deposition in a reactive plasma which may contain atoms and ions of zirconium, hafnium, tantalum, silicon and oxygen, depending on the nature of the deposited materials. According to the invention, the materials consist of thin oxide layers of the type of MeSiO (ZrSiO, TaSiO or HfSiO) or MeMeSiO(ZrTaSiO, ZrHfSiO or TaHfSiO) with a thickness ranging between 0.5...3μm, with the oxygen elemental concentration ratio in relation to the sum of the concentrations for the other elements ranging between 0.7...2, with a good adherence to the sublayer, the normal critical forces measured upon the scratch adherence test being 8...34 N, with a hardness ranging between 8...18 GPa and an average roughness < 10 nm, with the contact angle < 90°, the ion quantity released into an artificial physiological Ringer's solution being < 35μg/cm, with the corrosion speed < 6 x 10mm/year and a cellular viability ranging between 80...96%.</p> |
