Research Article
Biological Behaviour and Enhanced Anticorrosive Performance of the Nitrided Superelastic Ti-23Nb-0.7Ta-2Zr-0.5N Alloy
Table 2
Main electrochemical parameters for Ti and bare and nitrided Ti-23Nb-0.7Ta-2Zr-0.5N alloy in Ringer’s solution of different pH values, at 37°C.
| Material | (mV) | (mV) | (mV) | (mV) | (A/cm2) |
| Ringer pH = 3.21 | Ti | −400 | −200 | >1000 | 200 | 25.1 | Bare Ti-23Nb-0.7Ta-2Zr-0.5N | −350 | −150 | >1000 | 200 | 6.3 | Nitrided Ti-23Nb-0.7Ta-2Zr-0.5N | −250 | −100 | >1000 | 150 | 3.2 |
| Ringer pH = 7.58 | Ti | −320 | −200 | >1000 | 120 | 15.2 | Bare Ti-23Nb-0.7Ta-2Zr-0.5N | −250 | −150 | >1000 | 100 | 2.3 | Nitrided Ti-23Nb-0.7Ta-2Zr-0.5N | −150 | −50 | >1000 | 50 | 1.2 |
| Ringer pH = 8.91 | Ti | −475 | −275 | >1000 | 200 | 18.3 | Bare Ti-23Nb-0.7Ta-2Zr-0.5N | −350 | −250 | >1000 | 100 | 5.5 | Nitrided Ti-23Nb-0.7Ta-2Zr-0.5N | −250 | −150 | >1000 | 100 | 3.3 |
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