Short- and Long-Term Wettability Evolution and Corrosion Resistance of Uncoated and Polymer-Coated Laser-Textured Steel Surface
Abstract
:1. Introduction
2. Materials and Methods
3. Results and Discussion
3.1. Surface Morphology
3.2. Surface Wettability and Aging
3.2.1. Uncoated Laser-Textured Surfaces
3.2.2. Coated Laser Textured Surfaces
3.3. Electrochemical Measurements
4. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Scan Line Separation ∆x = ∆y [μm] | Sa [μm] | AR/A0 |
---|---|---|
100 μm | 10.8 ± 0.1 | 2.0 ± 0.3 |
100 μm, E | 10.9 ± 0.1 | 1.7 ± 0.4 |
100 μm, FAS-TiO2/E | 11.2 ± 0.1 | 1.8 ± 0.2 |
50 μm | 10.7 ± 0.1 | 4.3 ± 0.1 |
50 μm, E | 10.4 ± 0.2 | 4.3 ± 0.2 |
50 μm, FAS-TiO2/E | 10.7 ± 0.2 | 4.1 ± 0.2 |
25 μm | 5.2 ± 0.1 | 1.5 ± 0.1 |
25 μm, E | 5.3 ± 0.2 | 1.4 ± 0.2 |
25 μm, FAS-TiO2/E | 5.6 ± 0.2 | 1.6 ± 0.2 |
Scan Line Separations [μm] | Complete Wetting Regime | Transition Period | Time Constant, τ |
---|---|---|---|
100, ambient | 4 days | 16 days | 10.6 days |
100, chamber | 15 days | 31 days | 20.8 days |
50, ambient | 8 days | 13 days | 6.5 days |
50, chamber | 21 days | 59 days | 29.4 days |
25, ambient | 21 days | 14 days | 4.1 days |
25, chamber | 35 days | 122 days | 74.1 days |
Scan Line Separation [μm] | Uncoated Contact angle [°] | E Contact Angle [°] | FAS-TiO2/E Contact Angle [°] |
---|---|---|---|
Immediately after preparation | |||
100, ambient | 0 | 97.5 ± 1.4 | 143.4 ± 3.1 |
50, ambient | 0 | 112.1 ± 1.9 | 151.1 ± 2.1 |
25, ambient | 0 | 108.3 ± 2.3 | 151.9 ± 0.7 |
3 months after preparation | |||
100, ambient | 130.5 ± 0.6 | 104.3 ± 2.6 | 140.5 ± 2.2 |
100, chamber | 138.6 ± 3.2 | 100.2 ± 1.7 | 147.3 ± 1.2 |
50, ambient | 146.3 ± 1.6 | 115.0 ± 2.2 | 151.1 ± 0.9 |
50, chamber | 145.1 ± 1.6 | 108.8 ± 1.5 | 151.5 ± 1.0 |
25, ambient | 150.7 ± 1.1 | 115.0 ± 1.2 | 153.7 ± 1.3 |
25, chamber | 56.5 ± 7.8 | 107.3 ± 2.2 | 152.0 ± 1.1 |
1 year after preparation | |||
100, ambient | 154.5 ± 1.5 | 105.8 ± 2.2 | 149.8 ± 1.9 |
100, chamber | 155.3 ± 1.8 | 103.0 ± 2.1 | 154.3 ± 0.9 |
50, ambient | 155.1 ± 2.1 | 117.3 ± 1.6 | 154.2 ± 1.6 |
50, chamber | 154.2 ± 2.1 | 110.8 ± 2.2 | 155.1 ± 1.2 |
25, ambient | 155.8 ± 1.8 | 118.4 ± 1.9 | 156.3 ± 1.8 |
25, chamber | 156.3 ± 1.6 | 112.5 ± 1.8 | 156.1 ± 1.5 |
Scan Line Separation [μm] | Ecorr [mV] | icorr [µA/cm2] | vcorr [µm/year] | Contact Angle [o] |
---|---|---|---|---|
Immediately after preparation | ||||
100 µm | −86.6 ± 0.5 | 4.345 ± 0.008 | 16.25 ± 0.07 | 0 |
100 µm, E | −172.9 ± 0.6 | 2.500 ± 0.006 | 3.45 ± 0.05 | 97.5 ± 1.4 |
100 µm, FAS-TiO2/E | −70.7 ± 0.4 | 0.010 ± 0.001 | 0.25 ± 0.04 | 143.4 ± 3.1 |
50 µm | −59.7 ± 0.3 | 2.402 ± 0.005 | 20.51 ± 0.08 | 0 |
50 µm, E | −127.7 ± 0.5 | 0.209 ± 0.004 | 0.58 ± 0.03 | 112.1 ± 1.9 |
50 µm, FAS-TiO2/E | −230.4 ± 0.9 | 0.007 ± 0.001 | 0.07 ± 0.01 | 151.1 ± 2.1 |
25 µm | −108.8 ± 0.5 | 5.540 ± 0.009 | 39.73 ± 0.07 | 0 |
25 µm, E | 55.9 ± 0.2 | 0.013 ± 0.001 | 0.13 ± 0.01 | 108.3 ± 2.3 |
25 µm, FAS-TiO2/E | −17.6 ± 0.1 | 0.002 ± 0.001 | 0.07 ± 0.01 | 151.9 ± 0.7 |
3 months after preparation | ||||
100 µm | −30.6 ± 0.2 | 0.130 ± 0.007 | 0.70 ± 0.03 | 130.5 ± 0.6 |
100 µm, E | 0.6 ± 0.1 | 0.155 ± 0.008 | 1.20 ± 0.04 | 104.3 ± 2.6 |
100 µm, FAS-TiO2/E | −4.6 ± 0.1 | 0.005 ± 0.001 | 0.15 ± 0.01 | 140.5 ± 2.2 |
50 µm | 1.6 ± 0.1 | 0.040 ± 0.004 | 0.42 ± 0.02 | 146.3 ± 1.6 |
50 µm, E | −11.1 ± 0.1 | 0.005 ± 0.001 | 0.12 ± 0.01 | 115.0 ± 2.2 |
50 µm, FAS-TiO2/E | −121.4 ± 0.9 | 0.005 ± 0.001 | 0.05 ± 0.01 | 151.1 ± 0.9 |
25 µm | −35.7 ± 0.2 | 0.367 ± 0.006 | 2.60 ± 0.05 | 150.7 ± 1.1 |
25 µm, E | −120.3 ± 0.7 | 0.067 ± 0.003 | 0.40 ± 0.02 | 115.0 ± 1.2 |
25 µm, FAS-TiO2/E | −20.4 ± 0.1 | 0.013 ± 0.002 | 0.27 ± 0.03 | 153.7 ± 1.3 |
1 year after preparation | ||||
100 µm | −105.0 ± 0.9 | 0.015 ± 0.002 | 0.15 ± 0.01 | 155.3 ± 1.8 |
100 µm, E | −4.9 ± 0.8 | 0.005 ± 0.001 | 0.05 ± 0.01 | 103.0 ± 2.1 |
100 µm, FAS-TiO2/E | −210.7 ± 0.9 | 0.035 ± 0.004 | 0.15 ± 0.01 | 154.3 ± 0.9 |
50 µm | −8.4 ± 0.1 | 0.009 ± 0.001 | 0.09 ± 0.01 | 154.2 ± 2.1 |
50 µm, E | −298.8 ± 0.3 | 0.009 ± 0.001 | 0.12 ± 0.01 | 110.8 ± 2.2 |
50 µm, FAS-TiO2/E | −96.6 ± 0.5 | 0.002 ± 0.001 | 0.02 ± 0.01 | 155.1 ± 1.2 |
25 µm | −122.5 ± 0.6 | 0.127 ± 0.009 | 1.47 ± 0.02 | 156.3 ± 1.6 |
25 µm, E | −50.8 ± 0.9 | 0.007 ± 0.001 | 0.07 ± 0.01 | 112.5 ± 1.8 |
25 µm, FAS-TiO2/E | −366.4 ± 0.3 | 0.060 ± 0.005 | 0.53 ± 0.05 | 156.1 ± 1.5 |
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Conradi, M.; Sever, T.; Gregorčič, P.; Kocijan, A. Short- and Long-Term Wettability Evolution and Corrosion Resistance of Uncoated and Polymer-Coated Laser-Textured Steel Surface. Coatings 2019, 9, 592. https://doi.org/10.3390/coatings9090592
Conradi M, Sever T, Gregorčič P, Kocijan A. Short- and Long-Term Wettability Evolution and Corrosion Resistance of Uncoated and Polymer-Coated Laser-Textured Steel Surface. Coatings. 2019; 9(9):592. https://doi.org/10.3390/coatings9090592
Chicago/Turabian StyleConradi, Marjetka, Tina Sever, Peter Gregorčič, and Aleksandra Kocijan. 2019. "Short- and Long-Term Wettability Evolution and Corrosion Resistance of Uncoated and Polymer-Coated Laser-Textured Steel Surface" Coatings 9, no. 9: 592. https://doi.org/10.3390/coatings9090592