Surface treatment for titanium, alloys, containing titanium, alloys containing titatnium oxides, for medical, surgical and implantological use

摘要

A surface treatment (1) for metals, particularly for titanium, alloys containing titanium, alloys containing titanium oxides, for medical, surgical and implantological use, which comprises the steps of: a) immersing the metallic component (2) in a first acid solution whose total pH value is comprised between 1 and 4, for a time comprised between ten seconds and five minutes at a temperature comprised between 10°C and 50°C; b) subjecting the metallic component (2) to washing with water whose total pH value is comprised between 5 and 7, for a time comprised between ten seconds and ten minutes at a temperature comprised between 10°C and 80°C; c) immersing the metallic component (2) in a second acid solution whose total pH value is comprised between 1 and 4, for a time comprised between two minutes and thirty minutes at a temperature comprised between 25°C and 60°C; d) subjecting the metallic component (2) to washing with water whose total pH value is comprised between 5 and 7, for a time comprised between ten seconds and ten minutes at a temperature comprised between 10°C and 80°C; e) immersing the metallic component (2) in a third acid solution whose total pH value is comprised between 1 and 4, for a time comprised between two seconds and two minutes at a temperature comprised between 10°C and 80°C; f) subjecting the metallic component to washing with water whose total pH value is comprised between 5 and 7, for a time comprised between ten seconds and ten minutes at a temperature comprised between 10°C and 80°C; g) immersing the metallic component (2) in a fourth acid solution whose total pH value is comprised between 1 and 6, at a temperature comprised between 3°C and 20°C, applying a voltage ramp to the fourth solution.