Effect of surface condition on the corrosion behaviour of AZ31 magnesium alloy
Corrosion of magnesium (Mg) is generally manifested by cathodic hydrogen gas evolution and concomitant anodic Mg dissolution. The surface condition significantly modified the corrosion of Mg, especially related to the deformation. The corrosion behaviour of AZ31 Mg alloy with emphasis on surface con...
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| Format: | Article |
| Language: | English |
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Elsevier Ltd
2021
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| Online Access: | http://umpir.ump.edu.my/id/eprint/31107/1/Effect%20of%20surface%20condition%20on%20the%20corrosion%20behaviour%20of%20AZ31.1.pdf |
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| author | M. I. M., Ramli M. A. F., Romzi Juliawati, Alias |
| author_facet | M. I. M., Ramli M. A. F., Romzi Juliawati, Alias |
| author_sort | M. I. M., Ramli |
| collection | UMP |
| description | Corrosion of magnesium (Mg) is generally manifested by cathodic hydrogen gas evolution and concomitant anodic Mg dissolution. The surface condition significantly modified the corrosion of Mg, especially related to the deformation. The corrosion behaviour of AZ31 Mg alloy with emphasis on surface condition effect has been investigated. Filiform-like corrosion was observed significantly along the grinding path due to surface modification by mechanical grinding. From the cross-section characterization, the corrosion attack into the crystallographic structure. The analysis of corrosion behaviour is based on the polarization behaviour during the electrochemical measurement and scanning vibration electrode technique (SVET) measurement for local electrochemical quantification. Cathodic filiform body with Mg(OH)2 formation promoted the anodic corrosion propagation. Thick non-protective corrosion product formed after a longer immersion period was associated with uniform pitting propagation tunneled underneath the alloy, confirming the autocatalytic cathodic activation. |
| first_indexed | 2024-03-06T12:49:27Z |
| format | Article |
| id | UMPir31107 |
| institution | Universiti Malaysia Pahang |
| language | English |
| last_indexed | 2024-03-06T12:49:27Z |
| publishDate | 2021 |
| publisher | Elsevier Ltd |
| record_format | dspace |
| spelling | UMPir311072021-04-09T04:16:17Z http://umpir.ump.edu.my/id/eprint/31107/ Effect of surface condition on the corrosion behaviour of AZ31 magnesium alloy M. I. M., Ramli M. A. F., Romzi Juliawati, Alias TJ Mechanical engineering and machinery Corrosion of magnesium (Mg) is generally manifested by cathodic hydrogen gas evolution and concomitant anodic Mg dissolution. The surface condition significantly modified the corrosion of Mg, especially related to the deformation. The corrosion behaviour of AZ31 Mg alloy with emphasis on surface condition effect has been investigated. Filiform-like corrosion was observed significantly along the grinding path due to surface modification by mechanical grinding. From the cross-section characterization, the corrosion attack into the crystallographic structure. The analysis of corrosion behaviour is based on the polarization behaviour during the electrochemical measurement and scanning vibration electrode technique (SVET) measurement for local electrochemical quantification. Cathodic filiform body with Mg(OH)2 formation promoted the anodic corrosion propagation. Thick non-protective corrosion product formed after a longer immersion period was associated with uniform pitting propagation tunneled underneath the alloy, confirming the autocatalytic cathodic activation. Elsevier Ltd 2021 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/31107/1/Effect%20of%20surface%20condition%20on%20the%20corrosion%20behaviour%20of%20AZ31.1.pdf M. I. M., Ramli and M. A. F., Romzi and Juliawati, Alias (2021) Effect of surface condition on the corrosion behaviour of AZ31 magnesium alloy. Materials Today: Proceedings. pp. 1-6. ISSN 2214-7853. (In Press / Online First) (In Press / Online First) https://doi.org/10.1016/j.matpr.2021.02.213 https://doi.org/10.1016/j.matpr.2021.02.213 |
| spellingShingle | TJ Mechanical engineering and machinery M. I. M., Ramli M. A. F., Romzi Juliawati, Alias Effect of surface condition on the corrosion behaviour of AZ31 magnesium alloy |
| title | Effect of surface condition on the corrosion behaviour of AZ31 magnesium alloy |
| title_full | Effect of surface condition on the corrosion behaviour of AZ31 magnesium alloy |
| title_fullStr | Effect of surface condition on the corrosion behaviour of AZ31 magnesium alloy |
| title_full_unstemmed | Effect of surface condition on the corrosion behaviour of AZ31 magnesium alloy |
| title_short | Effect of surface condition on the corrosion behaviour of AZ31 magnesium alloy |
| title_sort | effect of surface condition on the corrosion behaviour of az31 magnesium alloy |
| topic | TJ Mechanical engineering and machinery |
| url | http://umpir.ump.edu.my/id/eprint/31107/1/Effect%20of%20surface%20condition%20on%20the%20corrosion%20behaviour%20of%20AZ31.1.pdf |
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