Microgalvanic Corrosion of Mg–Ca and Mg–Al–Ca Alloys in NaCl and Na<sub>2</sub>SO<sub>4</sub> Solutions
As a kind of potential biomedical material, Mg–Ca alloy has attracted much attention. However, the role of Ca-containing intermetallics in microgalvanic corrosion is still controversial. In 0.6 mol/L NaCl and Na<sub>2</sub>SO<sub>4</sub> solutions, the microgalvanic corrosion...
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-11-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/14/23/7140 |
| _version_ | 1797507545915457536 |
|---|---|
| author | Peixu Yang Songbo Ye Baojing Feng Jinhui Liu Sensen Huang Guonan Liu Weidong Zhang Weineng Tang Shijie Zhu Shaojun Zhang |
| author_facet | Peixu Yang Songbo Ye Baojing Feng Jinhui Liu Sensen Huang Guonan Liu Weidong Zhang Weineng Tang Shijie Zhu Shaojun Zhang |
| author_sort | Peixu Yang |
| collection | DOAJ |
| description | As a kind of potential biomedical material, Mg–Ca alloy has attracted much attention. However, the role of Ca-containing intermetallics in microgalvanic corrosion is still controversial. In 0.6 mol/L NaCl and Na<sub>2</sub>SO<sub>4</sub> solutions, the microgalvanic corrosion behavior of the second phase and Mg matrix of Mg–Ca and Mg–Al–Ca alloys was examined. It was confirmed that the Mg<sub>2</sub>Ca phase acts as a microanode in microgalvanic corrosion in both NaCl and Na<sub>2</sub>SO<sub>4</sub> solutions, with the Mg matrix acting as the cathode and the Al<sub>2</sub>Ca phase acting as the microcathode to accelerate corrosion of the adjacent Mg matrix. It was also found that Cl<sup>−</sup> and SO<sub>4</sub><sup>2−</sup> have different sensibilities to microgalvanic corrosion. |
| first_indexed | 2024-03-10T04:49:59Z |
| format | Article |
| id | doaj.art-10e2f8f074604d51b6cc9cf00bfdd11a |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T04:49:59Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-10e2f8f074604d51b6cc9cf00bfdd11a2023-11-23T02:38:53ZengMDPI AGMaterials1996-19442021-11-011423714010.3390/ma14237140Microgalvanic Corrosion of Mg–Ca and Mg–Al–Ca Alloys in NaCl and Na<sub>2</sub>SO<sub>4</sub> SolutionsPeixu Yang0Songbo Ye1Baojing Feng2Jinhui Liu3Sensen Huang4Guonan Liu5Weidong Zhang6Weineng Tang7Shijie Zhu8Shaojun Zhang9Henan Province Industrial Technology Research Institute of Resources and Materials, Zhengzhou University, Zhengzhou 450001, ChinaHenan Province Industrial Technology Research Institute of Resources and Materials, Zhengzhou University, Zhengzhou 450001, ChinaHenan Province Industrial Technology Research Institute of Resources and Materials, Zhengzhou University, Zhengzhou 450001, ChinaHenan Province Industrial Technology Research Institute of Resources and Materials, Zhengzhou University, Zhengzhou 450001, ChinaInstitute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, ChinaHenan Province Industrial Technology Research Institute of Resources and Materials, Zhengzhou University, Zhengzhou 450001, ChinaHenan Province Industrial Technology Research Institute of Resources and Materials, Zhengzhou University, Zhengzhou 450001, ChinaTechnology Center, Baosteel Metal Co., Ltd., Shanghai 200940, ChinaSchool of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, ChinaHenan Province Industrial Technology Research Institute of Resources and Materials, Zhengzhou University, Zhengzhou 450001, ChinaAs a kind of potential biomedical material, Mg–Ca alloy has attracted much attention. However, the role of Ca-containing intermetallics in microgalvanic corrosion is still controversial. In 0.6 mol/L NaCl and Na<sub>2</sub>SO<sub>4</sub> solutions, the microgalvanic corrosion behavior of the second phase and Mg matrix of Mg–Ca and Mg–Al–Ca alloys was examined. It was confirmed that the Mg<sub>2</sub>Ca phase acts as a microanode in microgalvanic corrosion in both NaCl and Na<sub>2</sub>SO<sub>4</sub> solutions, with the Mg matrix acting as the cathode and the Al<sub>2</sub>Ca phase acting as the microcathode to accelerate corrosion of the adjacent Mg matrix. It was also found that Cl<sup>−</sup> and SO<sub>4</sub><sup>2−</sup> have different sensibilities to microgalvanic corrosion.https://www.mdpi.com/1996-1944/14/23/7140Mg–Ca alloyintermetallicmicrogalvanic corrosioncorrosion resistance |
| spellingShingle | Peixu Yang Songbo Ye Baojing Feng Jinhui Liu Sensen Huang Guonan Liu Weidong Zhang Weineng Tang Shijie Zhu Shaojun Zhang Microgalvanic Corrosion of Mg–Ca and Mg–Al–Ca Alloys in NaCl and Na<sub>2</sub>SO<sub>4</sub> Solutions Materials Mg–Ca alloy intermetallic microgalvanic corrosion corrosion resistance |
| title | Microgalvanic Corrosion of Mg–Ca and Mg–Al–Ca Alloys in NaCl and Na<sub>2</sub>SO<sub>4</sub> Solutions |
| title_full | Microgalvanic Corrosion of Mg–Ca and Mg–Al–Ca Alloys in NaCl and Na<sub>2</sub>SO<sub>4</sub> Solutions |
| title_fullStr | Microgalvanic Corrosion of Mg–Ca and Mg–Al–Ca Alloys in NaCl and Na<sub>2</sub>SO<sub>4</sub> Solutions |
| title_full_unstemmed | Microgalvanic Corrosion of Mg–Ca and Mg–Al–Ca Alloys in NaCl and Na<sub>2</sub>SO<sub>4</sub> Solutions |
| title_short | Microgalvanic Corrosion of Mg–Ca and Mg–Al–Ca Alloys in NaCl and Na<sub>2</sub>SO<sub>4</sub> Solutions |
| title_sort | microgalvanic corrosion of mg ca and mg al ca alloys in nacl and na sub 2 sub so sub 4 sub solutions |
| topic | Mg–Ca alloy intermetallic microgalvanic corrosion corrosion resistance |
| url | https://www.mdpi.com/1996-1944/14/23/7140 |
| work_keys_str_mv | AT peixuyang microgalvaniccorrosionofmgcaandmgalcaalloysinnaclandnasub2subsosub4subsolutions AT songboye microgalvaniccorrosionofmgcaandmgalcaalloysinnaclandnasub2subsosub4subsolutions AT baojingfeng microgalvaniccorrosionofmgcaandmgalcaalloysinnaclandnasub2subsosub4subsolutions AT jinhuiliu microgalvaniccorrosionofmgcaandmgalcaalloysinnaclandnasub2subsosub4subsolutions AT sensenhuang microgalvaniccorrosionofmgcaandmgalcaalloysinnaclandnasub2subsosub4subsolutions AT guonanliu microgalvaniccorrosionofmgcaandmgalcaalloysinnaclandnasub2subsosub4subsolutions AT weidongzhang microgalvaniccorrosionofmgcaandmgalcaalloysinnaclandnasub2subsosub4subsolutions AT weinengtang microgalvaniccorrosionofmgcaandmgalcaalloysinnaclandnasub2subsosub4subsolutions AT shijiezhu microgalvaniccorrosionofmgcaandmgalcaalloysinnaclandnasub2subsosub4subsolutions AT shaojunzhang microgalvaniccorrosionofmgcaandmgalcaalloysinnaclandnasub2subsosub4subsolutions |