Corrosion and Serration Behaviors of TiZr0.5NbCr0.5VxMoy High Entropy Alloys in Aqueous Environments
Abstract
:1. Introduction
2. Results
2.1. Microstructure Analysis
Elements | Ti | Zr | Nb | Cr | V | Mo |
---|---|---|---|---|---|---|
Ti | 0 | 0 | 2 | −7 | −2 | −4 |
Zr | 0 | 4 | −12 | −4 | −6 | |
Nb | 0 | −7 | −1 | −6 | ||
Cr | 0 | −2 | 0 |
Alloys | Phases and states | Ti | Zr | Nb | Cr | V | Mo | |
---|---|---|---|---|---|---|---|---|
TiZr0.5NbCr0.5 | nominal | 33.33 | 16.67 | 33.33 | 16.67 | |||
ID | Before immersed | 27.13 | 27.32 | 14.07 | 31.48 | |||
After immersed | 26.60 | 25.76 | 16.29 | 31.34 | ||||
DR | Before immersed | 32.25 | 14.53 | 41.11 | 12.11 | |||
After immersed | 32.09 | 14.57 | 40.17 | 13.17 | ||||
TiZr0.5NbCr0.5V | nominal | 25.00 | 12.50 | 25.00 | 12.50 | 25.00 | ||
ID | Before immersed | 15.84 | 24.59 | 11.95 | 21.62 | 25.99 | ||
After immersed | 14.93 | 23.26 | 14.23 | 22.47 | 25.11 | |||
DR | Before immersed | 25.99 | 8.52 | 25.43 | 12.79 | 27.27 | ||
After immersed | 25.48 | 8.34 | 28.61 | 10.88 | 26.69 | |||
TiZr0.5NbCr0.5Mo | nominal | 25.00 | 12.50 | 25.00 | 12.50 | 25.00 | ||
ID | Before immersed | 19.87 | 30.98 | 12.08 | 26.39 | 10.68 | ||
After immersed | 18.75 | 32.79 | 10.36 | 27.84 | 10.27 | |||
DR | Before immersed | 21.30 | 8.05 | 31.42 | 6.85 | 32.37 | ||
After immersed | 22.42 | 9.8 | 30.08 | 8.86 | 28.84 |
2.2. Corrosion Behaviors
2.2.1. Potentiodynamic Polarization (PP) Measurements
Alloys | Type of solutions | Temperature | Ecorr(VSCE) | Icorr(μA/cm2) | Epit(VSCE) | ΔE(V) |
---|---|---|---|---|---|---|
TiZr0.5NbCr0.5 | H2SO4 | 25 °C | −0.277 | 0.452 | 0.968 | 1.170 |
NaCl | 25 °C | −0.489 | 0.00441 | 1.180 | 1.480 | |
40 °C | −0.327 | 0.211 | 0.954 | 1.127 | ||
55 °C | −0.372 | 0.522 | 0.783 | 0.994 | ||
TiZr0.5NbCr0.5V | H2SO4 | 25 °C | −0.087 | 0.02039 | 0.998 | 0.943 |
NaCl | 25 °C | −0.311 | 0.00974 | 1.448 | 1.482 | |
40 °C | −0.293 | 0.0247 | 1.115 | 1.344 | ||
55 °C | −0.332 | 0.0765 | 1.097 | 1.260 | ||
TiZr0.5NbCr0.5Mo | H2SO4 | 25 °C | −0.018 | 0.0526 | 0.984 | 0.944 |
NaCl | 25 °C | −0.455 | 0.0940 | 1.400 | 1.820 | |
40 °C | −0.403 | 0.223 | 1.363 | 1.690 | ||
55 °C | −0.345 | 0.458 | 1.224 | 1.482 |
2.2.2. Immersion Tests
3. Discussion
4. Experimental Section
4.1. Test Specimens for Electrochemical and Immersion Tests
4.2. Electrochemical Test
4.3. XRD and SEM Analysis
5. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Li, J.; Yang, X.; Zhu, R.; Zhang, Y. Corrosion and Serration Behaviors of TiZr0.5NbCr0.5VxMoy High Entropy Alloys in Aqueous Environments. Metals 2014, 4, 597-608. https://doi.org/10.3390/met4040597
Li J, Yang X, Zhu R, Zhang Y. Corrosion and Serration Behaviors of TiZr0.5NbCr0.5VxMoy High Entropy Alloys in Aqueous Environments. Metals. 2014; 4(4):597-608. https://doi.org/10.3390/met4040597
Chicago/Turabian StyleLi, Jiemin, Xiao Yang, Ruanli Zhu, and Yong Zhang. 2014. "Corrosion and Serration Behaviors of TiZr0.5NbCr0.5VxMoy High Entropy Alloys in Aqueous Environments" Metals 4, no. 4: 597-608. https://doi.org/10.3390/met4040597