Research Article
Synthesis and Mechanical/Electrochemical Characterization of TiO2 Nanotubular Structures Obtained at High Voltage
Table 2
Electrochemical parameters of the potentiodynamic polarization curves.
| | Sample |
Parameters of the curves with 1 M Na2SO4 solution |
Parameters of the curves with 1 M Na2SO4 + H2SO4 solution | | (mA/cm2) | (mV) |
(Ω cm2) | (mA/cm2) | (mV) | (Ω cm2) |
| | Pure Ti | 2.59 × 10−5 | –182 | 8.7 × 105 | 5.4 × 10−5 | −44 | 7.1 × 105 | | Amorphous TiO2 | 2.10 × 10−3 | –618 | 1.1 × 104 | 1.02 × 10−3 | −318 | 2.3 × 104 | | TiO2 crystallized at 450°C | 2.54 × 10−4 | –396 | 1.1 × 105 | 2.5 × 10−3 | −246 | 7.4 × 103 | | TiO2 crystallized at 600°C | 8.6 × 10−6 | –235 | 1.9 × 106 | 1.1 × 10−4 | −150 | 2.4 × 105 |
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