Journal of Inorganic Materials, Volume. 35, Issue 4, 461(2020)
Figures & Tables(12)
1. Potentiodynamic polarization curves of Zn immersed in Ringer’s solution at (37±0.5) ℃ for 7, 14, 28, 42 and 56 d
2. Parameters of corrosion potential and corrosion current density obtained from PDP curves (a), and corrosion rate P i obtained from current density (b)
3. Nyquist plots measured by Electrochemical Impedance Spectroscopy (EIS) (a), bode plots of |Z| vs . frequency (b) and bode plots of phase angle vs . frequency (c) of Zn immersed in Ringer’s solution at (37±0.5) ℃ for 7, 14, 28, 42 and 56 d
4. EIS data fitted with Equivalent electrical circuit (EEC) for 0 d (a) and EEC for 7 to 56 d (b), interfacial charge transfer resistance R ct and the corrosion products resistance R p obtained from fitted results of the EIS spectra (c), and polarization resistance R polar calculated from EIS components as a function of time (d)
5. Surface morphology of Zn immersed in Ringer’s solution at (37±0.5)℃ for 7 (a), 14 (b), 28 (c), 42 (d), and 56 (e) d
6. Cross-sectional images (a) and EDS line profile (b) of Zn immersed in Ringer’s solution at (37±0.5) ℃ for 56 d
7. XRD spectra of Zn immersed in Ringer’s solution at (37±0.5) ℃ for 7, 14, 28, 42, and 56 d
8. XPS spectra (a) and high-resolution O 1s (b) and (c) Ca 2p spectra of bare Zn and Zn after being immersed in Ringer’s solution for 56 d
9. Surface morphology of Zn immersed in Ringer’s solution at (37±0.5) ℃ for 7 (a), 14 (b), 28, (c) 42 (d), and 56 d (e) after removal of corrosion products
10. Cross-sectional SEM images of Zn immersed in Ringer’s solution at (37±0.5) ℃ for 56 d after removal of corrosion products
11. Corrosion rate P w calculated from weight loss of Zn after immersion in Ringer’s solution at (37±0.5) ℃ for 7, 14, 28, 42 and 56 d
Table 1. The evolution of fitted results of electrochemical impedance spectroscopy of Zn in Ringer’s solution at (37±0.5) ℃
View tableView in ArticleTable 1. The evolution of fitted results of electrochemical impedance spectroscopy of Zn in Ringer’s solution at (37±0.5) ℃
Samples R s/(Ω∙cm2) Q p1/(×10-6, sn *∙Ω-1∙cm-2)n 1R p1/(Ω∙cm2) Q p2/(×10-6, sn *∙Ω-1∙cm-2)n 2R p2/(Ω∙cm2) Q dl/(×10-6, sn *∙Ω-1∙cm-2)n 3R ct/(×103, Ω∙cm2)Z w/(×10-3, s1/2∙Ω-1∙cm-2)0 d 21.09 35.00 0.76 105 — — — 2376 0.80 0.45 3.81 7 d 22.48 5.05 0.71 576 315.0 0.49 3458 155 0.61 6.28 — 14 d 16.21 1.24 0.65 175 13.7 0.74 2266 798 0.56 4.26 — 28 d 21.28 16.80 0.72 260 344.0 0.22 2893 322 0.81 10.42 — 42 d 22.91 0.95 0.74 430 232.0 0.49 2200 243 0.82 9.22 — 56 d 23.56 2.71 0.70 511 121.0 0.50 3342 290 0.57 12.88 —
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Shuai TANG, Wentai ZHANG, Junyu QIAN, Peng XIAN, Xiaoshan MO, Nan HUANG, Guojiang WAN.
Paper Information
Category: RESEARCH PAPER
Received: Apr. 25, 2019
Accepted: --
Published Online: Mar. 1, 2021
The Author Email: WAN Guojiang (guojiang.wan@home.swjtu.edu.cn)
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