Corrosion resistance and ion dissolution of titanium with different surface microroughness

摘要: In vitro corrosion resistance and ion dissolution of commercial pure titanium with different surface microroughness are studied adopting constant potential meter atomic absorption spectroscopy. terms the roughness, samples divided into 5 groups: smooth surface, machining 2 surfaces macrorough surface. Each group contains three category under treatments: natural oxidation (24 h exposure to air), 400 degrees C (400 C, 45 min thermal oxidation), 700 (700 oxidation). Hanks media, comparative studies through anode polarization curves release rates groups Ti demonstrates that best increase decrease sharply, is better than oxidation. a roughness all have good their drop raising roughness. Comparing microrough lower rate which similar those surfaces. Moreover, lowest. It hypothesized treatment methods such as oxidation, aging so on will improve rough effectively by increasing thickness protection film, improving its structural uniformity facilitating formation ordered, compact film.