上部構造金属とチタン溶射インプラント材の電気化学的検討

抄録

An electrochemical study was made on the relationship between superstructural metals,subjected to dissimilar pretreatment methods, and thermal sprayed coating Ti implant. As a result, the following findings were obtained.
1. The produced electrode potential can be classified as noble or less noble,depending on the types of metals used for superstructures type G (55% Au,26% Ag 10% Cu), type Pd (56% Ag, 20% Pd, 12% Au,11% Cu), type M (66% Ag,19% Sn,10% Zn) and type Ti, and their pretreatment methods.
2. Ti material is less nobel than the superstructural metals and shows a higher electrode potential.
3. The differences of the galvanic current values obtained,after the 264-hour metasurement, between the Ti implant thermal sprayed coating material and the superstructural metals are 14.03 mA/cm² for type G, 2.53 mA/cm² for type Pd, and 0.16 mA/cm² for type M.
4. The galvanic current values of superstructural metals range from 0.02 to 14.12 mA/cm².
5. The current-potential curve obtained by using cyclic voltammetry shows that the reactions of type G and Pd are reversible regardless of pretreatment.
6. Type M causes a reversible or irreversible reaction,revealing a complicated reaction.
7. Type Ti pretreated by the A method shows an irreversible reaction and type Ti pretreated by the B or C method shows a reversible reaction.