Initial Corrosion Behavior of 12Cr1MoV Steel in Thiosulfate-Containing Sodium Aluminate Solution
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials and Solution
2.2. Corrosion Experiments
2.3. Analysis of Corrosion Products
2.4. Electrochemical Tests
3. Results and Discussion
3.1. Corrosion Rate Analysis
3.2. SEM-EDS Analysis
3.3. Analysis of the Phase and Chemical Composition of the Corrosion Products
3.4. Analysis of the Polarization Curves
3.5. EIS Analysis
3.6. Analysis of the Cross-Section of the Corrosion Product Film
3.7. Corrosion Mechanism
4. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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C | Cr | Mo | V | Si | Mn | Fe |
---|---|---|---|---|---|---|
0.14 | 0.98 | 0.22 | 0.18 | 0.23 | 0.61 | Balance |
Time/d | O | S | Cr | Mn | Al | Na | Fe |
---|---|---|---|---|---|---|---|
1 | 6.59 | - | 0.62 | 0.28 | 0.15 | 0.32 | Balance |
2 | 4.26 | - | 0.75 | 0.46 | 0.35 | 0.26 | Balance |
3 | 6.37 | - | 0.74 | 0.42 | 1.15 | 0.01 | Balance |
4 | 27.22 | 0.15 | 1.06 | 0.77 | 1.06 | 0.43 | Balance |
5 | 26.80 | 0.18 | 0.83 | 0.62 | 0.37 | 0.25 | Balance |
Time (d) | Ecorr (mV) | Jcorr (µA·cm−2) | βa (mV·dec−1) | βc (mV·dec−1) |
---|---|---|---|---|
1 | −1208.46 | 265.6 | 55.8 | 83.8 |
2 | −1205.59 | 226.392 | 63.2 | 86.3 |
3 | −1222.86 | 132.344 | 77.7 | 77.4 |
4 | −1267.89 | 49.328 | 252.7 | 19.4 |
5 | −1271.53 | 41.192 | 308.8 | 141.8 |
Time (d) | Rs (Ω·cm2) | Rct (Ω·cm2) | Qdl (S cm−2 sn) | ndl | Rf (Ω·cm2) | Qf (S cm−2 sn) | nf | X2 (10−4) |
---|---|---|---|---|---|---|---|---|
1 | 0.8 | 154 | 0.001 | 0.74 | 122 | 0.024 | 0.74 | 7.54 |
2 | 1.0 | 179 | 0.031 | 0.86 | 229 | 0.048 | 0.84 | 6.81 |
3 | 1.2 | 491 | 0.026 | 0.74 | 550 | 0.082 | 0.93 | 7.96 |
4 | 0.7 | 593 | 0.003 | 0.97 | 690 | 0.002 | 0.59 | 6.35 |
5 | 0.8 | 643 | 0.0001 | 0.69 | 1281 | 0.010 | 0.66 | 5.26 |
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Yuan, J.; Chen, C.; Li, J.; Quan, B.; Lan, Y.; Wang, L.; Fu, H.; Gai, J. Initial Corrosion Behavior of 12Cr1MoV Steel in Thiosulfate-Containing Sodium Aluminate Solution. Metals 2020, 10, 1283. https://doi.org/10.3390/met10101283
Yuan J, Chen C, Li J, Quan B, Lan Y, Wang L, Fu H, Gai J. Initial Corrosion Behavior of 12Cr1MoV Steel in Thiosulfate-Containing Sodium Aluminate Solution. Metals. 2020; 10(10):1283. https://doi.org/10.3390/met10101283
Chicago/Turabian StyleYuan, Jingjiu, Chaoyi Chen, Junqi Li, Bianli Quan, Yuanpei Lan, Linzhu Wang, Hui Fu, and Jiaxuan Gai. 2020. "Initial Corrosion Behavior of 12Cr1MoV Steel in Thiosulfate-Containing Sodium Aluminate Solution" Metals 10, no. 10: 1283. https://doi.org/10.3390/met10101283