Microstructures, Mechanical Properties, and Corrosion Behavior of As-Cast Mg–2.0Zn–0.5Zr–xGd (wt %) Biodegradable Alloys
Abstract
:1. Introduction
2. Experimental Section
2.1. Sample Preparation
2.2. Microstructure Determination and Mechanical Properties Test
2.3. Electrochemical Corrosion Test
2.4. Immersion Corrosion Test
3. Results and Discussion
3.1. Microstructures
3.2. Mechanical Properties
3.3. Fracture Characteristics
3.4. Corrosion Behavior
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Material | 0Gd | 1Gd | 2Gd | 3Gd | 4Gd | 5Gd |
---|---|---|---|---|---|---|
UTS (MPa) | 183 ± 3 | 193 ± 4 | 210 ± 3 | 204 ± 3 | 196 ± 4 | 192 ± 3 |
YS (MPa) | 137 ± 3 | 143 ± 4 | 158 ± 3 | 155 ± 3 | 146 ± 4 | 141 ± 3 |
EL (%) | 7 ± 0.6 | 7.8 ± 0.5 | 8.7 ± 0.6 | 10.6 ± 0.6 | 9.5 ± 0.5 | 8.9 ± 0.5 |
Material | 0Gd | 1Gd | 2Gd | 3Gd | 4Gd | 5Gd |
---|---|---|---|---|---|---|
Ecorr (Vvs.SCE) | −1.621 ± 0.004 | −1.615 ± 0.003 | −1.542 ± 0.004 | −1.531 ± 0.003 | −1.586 ± 0.003 | −1.613 ± 0.004 |
Icorr (μA cm−2) | 9.278 ± 0.005 | 8.947 ± 0.004 | 8.136 ± 0.005 | 7.686 ± 0.004 | 8.746 ± 0.004 | 8.863 ± 0.005 |
Pi (mm/y) | 0.416 ± 0.003 | 0.401 ± 0.002 | 0.367 ± 0.003 | 0.343 ± 0.002 | 0.389 ± 0.002 | 0.398 ± 0.003 |
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Yao, H.; Wen, J.; Xiong, Y.; Liu, Y.; Lu, Y.; Cao, W. Microstructures, Mechanical Properties, and Corrosion Behavior of As-Cast Mg–2.0Zn–0.5Zr–xGd (wt %) Biodegradable Alloys. Materials 2018, 11, 1564. https://doi.org/10.3390/ma11091564
Yao H, Wen J, Xiong Y, Liu Y, Lu Y, Cao W. Microstructures, Mechanical Properties, and Corrosion Behavior of As-Cast Mg–2.0Zn–0.5Zr–xGd (wt %) Biodegradable Alloys. Materials. 2018; 11(9):1564. https://doi.org/10.3390/ma11091564
Chicago/Turabian StyleYao, Huai, Jiuba Wen, Yi Xiong, Ya Liu, Yan Lu, and Wei Cao. 2018. "Microstructures, Mechanical Properties, and Corrosion Behavior of As-Cast Mg–2.0Zn–0.5Zr–xGd (wt %) Biodegradable Alloys" Materials 11, no. 9: 1564. https://doi.org/10.3390/ma11091564