Abstract
This study was intened to develop the corrosion resistance of Ti-Ni shape memory alloy. As the first step, the passivation treatment which is recommended to be used for prevention of crevice corrosion in "Methode of pitting potential measurement for stainless steel" in JIS was adopted. Electrochemical behavior of Ti-Ni shape memory alloy were measured in 0.9% NaCl solution. The main results obtained are as follows. (i) The corrosion potential of passivation treated specimen showed a more noble potential of 0.07V (vs. S. C. E.) than the untreated specimen. (ii) Corrosion resistance of Ti-Ni shape memory alloy can be improved by forming the oxide film on surface from the results of pitting initiation potential.
