Enhanced Plasticity and Corrosion Resistance in Mg-Zn-Ca-Cu Amorphous Alloy Composite via Plasma Electrolytic Oxidation Treatment
In this study, a dendrite-reinforced Mg-based amorphous alloy composite was prepared through an in situ precipitation strategy. After plasma electrolytic oxidation (PEO) treatment, the Mg<sub>85.1</sub>Zn<sub>12.7</sub>Ca<sub>2</sub>Cu<sub>0.2</sub> am...
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MDPI AG
2022-02-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/12/2/300 |
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| author | Qingling Zeng Shuangshuang Chen Peidi Song Haodi Li Xierong Zeng |
| author_facet | Qingling Zeng Shuangshuang Chen Peidi Song Haodi Li Xierong Zeng |
| author_sort | Qingling Zeng |
| collection | DOAJ |
| description | In this study, a dendrite-reinforced Mg-based amorphous alloy composite was prepared through an in situ precipitation strategy. After plasma electrolytic oxidation (PEO) treatment, the Mg<sub>85.1</sub>Zn<sub>12.7</sub>Ca<sub>2</sub>Cu<sub>0.2</sub> amorphous alloy composite exhibited enhanced plasticity and corrosion resistance in a simulated body fluid solution (SBF). The PEO-treated composite showed a significant plastic strain of 10.5 ± 1.1%, as well as outstanding strain-hardening behavior. The enhancement of plasticity may be attributed to the in-situ formed coating, which can not only serve as a propagation barrier for shear bands but can also introduce nucleation sites in the bands as a result of stress mismatch and compositional heterogeneity. The corrosion density in the SBF decreased by three orders compared with the composite substrate. The spontaneous formation of apatite on the porous layer demonstrated that the prepared PEO coating has high bioactivity. The current work may provide a fundamental basis for developing biomedical Mg-based alloys with excellent comprehensive mechanical properties and corrosion resistance. |
| first_indexed | 2024-03-09T21:26:51Z |
| format | Article |
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| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-09T21:26:51Z |
| publishDate | 2022-02-01 |
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| series | Metals |
| spelling | doaj.art-b350e778b7264de5a112ce9cd9116a0f2023-11-23T21:08:10ZengMDPI AGMetals2075-47012022-02-0112230010.3390/met12020300Enhanced Plasticity and Corrosion Resistance in Mg-Zn-Ca-Cu Amorphous Alloy Composite via Plasma Electrolytic Oxidation TreatmentQingling Zeng0Shuangshuang Chen1Peidi Song2Haodi Li3Xierong Zeng4Shenzhen Key Laboratory of Special Functional Materials & Shenzhen Engineering Laboratory for Advance Technology of Ceramics, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, ChinaSchool of Materials Science and Engineering, Anhui University of Technology, Ma’anshan 243002, ChinaSchool of Materials Science and Engineering, Anhui University of Technology, Ma’anshan 243002, ChinaSchool of Materials Science and Engineering, Anhui University of Technology, Ma’anshan 243002, ChinaShenzhen Key Laboratory of Special Functional Materials & Shenzhen Engineering Laboratory for Advance Technology of Ceramics, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, ChinaIn this study, a dendrite-reinforced Mg-based amorphous alloy composite was prepared through an in situ precipitation strategy. After plasma electrolytic oxidation (PEO) treatment, the Mg<sub>85.1</sub>Zn<sub>12.7</sub>Ca<sub>2</sub>Cu<sub>0.2</sub> amorphous alloy composite exhibited enhanced plasticity and corrosion resistance in a simulated body fluid solution (SBF). The PEO-treated composite showed a significant plastic strain of 10.5 ± 1.1%, as well as outstanding strain-hardening behavior. The enhancement of plasticity may be attributed to the in-situ formed coating, which can not only serve as a propagation barrier for shear bands but can also introduce nucleation sites in the bands as a result of stress mismatch and compositional heterogeneity. The corrosion density in the SBF decreased by three orders compared with the composite substrate. The spontaneous formation of apatite on the porous layer demonstrated that the prepared PEO coating has high bioactivity. The current work may provide a fundamental basis for developing biomedical Mg-based alloys with excellent comprehensive mechanical properties and corrosion resistance.https://www.mdpi.com/2075-4701/12/2/300amorphous alloy compositestrengthcorrosion resistanceplasma electrolytic oxidation |
| spellingShingle | Qingling Zeng Shuangshuang Chen Peidi Song Haodi Li Xierong Zeng Enhanced Plasticity and Corrosion Resistance in Mg-Zn-Ca-Cu Amorphous Alloy Composite via Plasma Electrolytic Oxidation Treatment Metals amorphous alloy composite strength corrosion resistance plasma electrolytic oxidation |
| title | Enhanced Plasticity and Corrosion Resistance in Mg-Zn-Ca-Cu Amorphous Alloy Composite via Plasma Electrolytic Oxidation Treatment |
| title_full | Enhanced Plasticity and Corrosion Resistance in Mg-Zn-Ca-Cu Amorphous Alloy Composite via Plasma Electrolytic Oxidation Treatment |
| title_fullStr | Enhanced Plasticity and Corrosion Resistance in Mg-Zn-Ca-Cu Amorphous Alloy Composite via Plasma Electrolytic Oxidation Treatment |
| title_full_unstemmed | Enhanced Plasticity and Corrosion Resistance in Mg-Zn-Ca-Cu Amorphous Alloy Composite via Plasma Electrolytic Oxidation Treatment |
| title_short | Enhanced Plasticity and Corrosion Resistance in Mg-Zn-Ca-Cu Amorphous Alloy Composite via Plasma Electrolytic Oxidation Treatment |
| title_sort | enhanced plasticity and corrosion resistance in mg zn ca cu amorphous alloy composite via plasma electrolytic oxidation treatment |
| topic | amorphous alloy composite strength corrosion resistance plasma electrolytic oxidation |
| url | https://www.mdpi.com/2075-4701/12/2/300 |
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