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De-alloying Behavior of Mg–Al alloy in Sulphuric Acid and Acetic Acid Aqueous Solutions
The fabricated Mg–Al alloy consists of α-Mg phase and Mg–Mg(17)Al(12) eutectic phase. The corrosion behavior of cast Mg–Al alloy in sulphuric acid (H(2)SO(4)) and acetic acid (HAc) aqueous solutions was investigated. The Mg–Al alloy shows general corrosion in H(2)SO(4) solution, and the α-Mg dendrit...
| Autores principales: | , , |
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
| Publicado: |
MDPI
2019
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| Materias: | |
| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6651890/ https://www.ncbi.nlm.nih.gov/pubmed/31247922 http://dx.doi.org/10.3390/ma12132046 |
| Sumario: | The fabricated Mg–Al alloy consists of α-Mg phase and Mg–Mg(17)Al(12) eutectic phase. The corrosion behavior of cast Mg–Al alloy in sulphuric acid (H(2)SO(4)) and acetic acid (HAc) aqueous solutions was investigated. The Mg–Al alloy shows general corrosion in H(2)SO(4) solution, and the α-Mg dendrites revealed a slightly faster corrosion rate than that of the eutectics. In HAc solution, the alloy shows an obvious selective corrosion characteristic, with the α-Mg dendrites being corroded preferentially. Grain orientation plays an important role in corrosion behavior of the alloy in the HAc solutions. |
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