Cu对Ni-Ti合金抗支架内再狭窄与耐蚀性能的影响

许林杰, 刘徽, 任玲, 杨柯

Effect of Cu on In-Stent Restenosis and Corrosion Resistance of Ni-Ti Alloy

XU Linjie, LIU Hui, REN Ling, YANG Ke

图2 Ni-Ti和Ni-Ti-Cu合金的电化学测试结果

Fig.2 Electrochemical test results of Ni-Ti and Ni-Ti-Cu alloys (a) open circuit potential curves (Eocp—open circuit potential) (b) potentiodynamic polarization curves (i—current density, E—potential) (c) Nyquist diagram and fitting circuit diagram (Inset shows the equivalent circuit diagram. Z'—real impedance, Z''—imaginary impedance, R.E.—reference electrode, W.E.—working electrode, Rs—solution resistance, Rc1—passive film resistance, Qc1—constant-phase element) (d) Bode diagram (|Z|—impedance modulus)