Semiconducting behavior of the anodically passive films formed on AZ31B alloy
This work includes determination of the semiconductor character and estimation of the dopant levels in the passive film formed on AZ31B alloy in 0.01 M NaOH, as well as the estimation of the passive film thickness as a function of the film formation potential. Mott–Schottky analysis revealed that th...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2014-12-01
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| Series: | Journal of Magnesium and Alloys |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213956714000656 |
| _version_ | 1797204021237252096 |
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| author | A. Fattah-alhosseini M. Sabaghi Joni |
| author_facet | A. Fattah-alhosseini M. Sabaghi Joni |
| author_sort | A. Fattah-alhosseini |
| collection | DOAJ |
| description | This work includes determination of the semiconductor character and estimation of the dopant levels in the passive film formed on AZ31B alloy in 0.01 M NaOH, as well as the estimation of the passive film thickness as a function of the film formation potential. Mott–Schottky analysis revealed that the passive films displayed n-type semiconductive characteristics, where the oxygen vacancies and interstitials preponderated. Based on the Mott–Schottky analysis, it was shown that the calculated donor density increases linearly with increasing the formation potential. Also, the electrochemical impedance spectroscopy (EIS) results indicated that the thickness of the passive film was decreased linearly with increasing the formation potential. The results showed that decreasing the formation potential offer better conditions for forming the passive films with higher protection behavior, due to the growth of a much thicker and less defective films. |
| first_indexed | 2024-04-24T08:28:36Z |
| format | Article |
| id | doaj.art-f09e0f70c42642fd8e23e71b41071948 |
| institution | Directory Open Access Journal |
| issn | 2213-9567 |
| language | English |
| last_indexed | 2024-04-24T08:28:36Z |
| publishDate | 2014-12-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Magnesium and Alloys |
| spelling | doaj.art-f09e0f70c42642fd8e23e71b410719482024-04-16T21:12:18ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672014-12-012430530810.1016/j.jma.2014.10.005Semiconducting behavior of the anodically passive films formed on AZ31B alloyA. Fattah-alhosseiniM. Sabaghi JoniThis work includes determination of the semiconductor character and estimation of the dopant levels in the passive film formed on AZ31B alloy in 0.01 M NaOH, as well as the estimation of the passive film thickness as a function of the film formation potential. Mott–Schottky analysis revealed that the passive films displayed n-type semiconductive characteristics, where the oxygen vacancies and interstitials preponderated. Based on the Mott–Schottky analysis, it was shown that the calculated donor density increases linearly with increasing the formation potential. Also, the electrochemical impedance spectroscopy (EIS) results indicated that the thickness of the passive film was decreased linearly with increasing the formation potential. The results showed that decreasing the formation potential offer better conditions for forming the passive films with higher protection behavior, due to the growth of a much thicker and less defective films.http://www.sciencedirect.com/science/article/pii/S2213956714000656AZ31B alloyMott–SchottkyFormation potentialDonor density |
| spellingShingle | A. Fattah-alhosseini M. Sabaghi Joni Semiconducting behavior of the anodically passive films formed on AZ31B alloy Journal of Magnesium and Alloys AZ31B alloy Mott–Schottky Formation potential Donor density |
| title | Semiconducting behavior of the anodically passive films formed on AZ31B alloy |
| title_full | Semiconducting behavior of the anodically passive films formed on AZ31B alloy |
| title_fullStr | Semiconducting behavior of the anodically passive films formed on AZ31B alloy |
| title_full_unstemmed | Semiconducting behavior of the anodically passive films formed on AZ31B alloy |
| title_short | Semiconducting behavior of the anodically passive films formed on AZ31B alloy |
| title_sort | semiconducting behavior of the anodically passive films formed on az31b alloy |
| topic | AZ31B alloy Mott–Schottky Formation potential Donor density |
| url | http://www.sciencedirect.com/science/article/pii/S2213956714000656 |
| work_keys_str_mv | AT afattahalhosseini semiconductingbehavioroftheanodicallypassivefilmsformedonaz31balloy AT msabaghijoni semiconductingbehavioroftheanodicallypassivefilmsformedonaz31balloy |