Investigation of Service Life Prediction Models for Metallic Organic Coatings Using Full-Range Frequency EIS Data
Abstract
:1. Introduction
2. Materials and Methods
2.1. Preparation of Specimens
2.2. Accelerated Corrosion Tests
2.3. EIS Measurement
3. Results
3.1. Analysis of Morphology Change
3.2. Analysis of the Electrochemical Impedance Data
4. Life Prediction
4.1. The Brief of Theoretical Life Prediction Model
4.2. Prediction from |Z| Data at Low Frequency
4.3. Degradation Kinetics Model
4.4. Improved Degradation Kinetics Model
4.5. Neural Network Classification Model Based on Sample Detection
5. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Real Cycle | Plate 1# | Plate 2# | ||||
---|---|---|---|---|---|---|
Computational Forecast Cycle | Rounding Forecast Cycle | Prediction Cycle Error | Computational Forecast Cycle | Rounding Forecast Cycle | Prediction Cycle Error | |
0 | −1.56 | / | / | −1.15 | / | / |
1 | −1.85 | / | / | −1.96 | / | / |
2 | 4.04 | 4 | 2 | 3.70 | 4 | 2 |
3 | 6.08 | 6 | 3 | 5.51 | 6 | 3 |
4 | 4.77 | 5 | 1 | 4.89 | 5 | 1 |
5 | 6.32 | 6 | 1 | 5.81 | 6 | 1 |
6 | 6.22 | 6 | 0 | 6.39 | 6 | 0 |
7 | 5.95 | 6 | 1 | 5.90 | 6 | 1 |
8 | 6.49 | 6 | 2 | 6.53 | 7 | 1 |
Real Cycle | Plate 1# | Plate 2# | ||||
---|---|---|---|---|---|---|
Computational Forecast Cycle | Rounding Forecast Cycle | Prediction Cycle Error | Computational Forecast Cycle | Rounding Forecast Cycle | Prediction Cycle Error | |
0 | −0.52 | / | / | −0.31 | 0 | 0 |
1 | −1.36 | / | / | −1.34 | / | / |
2 | 2.90 | 3 | 1 | 2.52 | 3 | 1 |
3 | 6.03 | 6 | 3 | 5.15 | 5 | 2 |
4 | 3.88 | 4 | 0 | 4.00 | 4 | 0 |
5 | 6.39 | 6 | 1 | 5.42 | 5 | 0 |
6 | 6.38 | 6 | 0 | 6.59 | 7 | 1 |
7 | 6.21 | 6 | 1 | 5.96 | 6 | 1 |
8 | 7.04 | 7 | 1 | 7.07 | 7 | 1 |
Real Cycle | Plate 1# | Plate 2# | ||
---|---|---|---|---|
Forecast Cycle | Prediction Cycle Error | Forecast Cycle | Prediction Cycle Error | |
0 | 0 | 0 | 0 | 0 |
1 | 1 | 0 | 1 | 0 |
2 | 2 | 0 | 2 | 0 |
3 | 3 | 0 | 3 | 0 |
4 | 4 | 0 | 4 | 0 |
5 | 6 | 1 | 6 | 1 |
6 | 5 | 1 | 5 | 1 |
7 | 7 | 0 | 7 | 0 |
8 | 8 | 0 | 8 | 0 |
Analytical Methods or Models | The Failure Cycle |
---|---|
Morphological analysis | 5 |
Analysis of |Z| data at low frequency | 3 |
Degradation kinetics model | 4 |
Improved degradation kinetics model | 4 |
Neural network model | 5 |
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Xu, Y.; Ran, J.; Dai, W.; Zhang, W. Investigation of Service Life Prediction Models for Metallic Organic Coatings Using Full-Range Frequency EIS Data. Metals 2017, 7, 274. https://doi.org/10.3390/met7070274
Xu Y, Ran J, Dai W, Zhang W. Investigation of Service Life Prediction Models for Metallic Organic Coatings Using Full-Range Frequency EIS Data. Metals. 2017; 7(7):274. https://doi.org/10.3390/met7070274
Chicago/Turabian StyleXu, Yuanming, Junshuang Ran, Wei Dai, and Weifang Zhang. 2017. "Investigation of Service Life Prediction Models for Metallic Organic Coatings Using Full-Range Frequency EIS Data" Metals 7, no. 7: 274. https://doi.org/10.3390/met7070274