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Corrosion resistance of an amino acid-bioinspired calcium phosphate coating on magnesium alloy AZ31
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Xiao-Li Fan, Chang-Yang Li, Yu-Bo Wang, Yuan-Fang Huo, Shuo-Qi Li, Rong-Chang Zeng
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Table 2 Fitting results of EIS spectra.
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| Samples | Rs (kΩ cm2) | CPE1
(Ω-1 sn cm-2) | n1 | R1 (kΩ cm2) | CPE2
(Ω-1 sn cm-2) | n2 | Rct (kΩ cm2) | L (102H cm2) | RL (kΩ cm2) | | AZ31 substrate | 0.08 ± 0.01 | 1.58 × 10-5 ± 5.5 × 10-6 | 0.89 ± 0.02 | - | - | - | 0.55 ± 0.16 | 4.63 ± 0.83 | 7.21 ± 0.02 | | Ca-P coating | 0.12 ± 0.02 | 4.38 × 10-6 ± 4.47 × 10-7 | 0.68 ± 0.03 | 10.67 ± 0.55 | 8.13 × 10-6 ± 4.29 × 10-6 | 0.87 ± 0.04 | 2.98 ± 0.32 | 1.67 ± 0.82 | 2.95 ± 7.63 | | Ca-PL-Cys coating | 0.09 ± 0.01 | 1.15 × 10-5 ±7.28 × 10-6 | 0.65 ± 0.12 | 280.22 ± 152.57 | 1.3 × 10-5 ±1.27 × 10-5 | 0.80 ± 0.16 | 19.86 ± 2.93 | - | - |
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