Improvement of corrosion resistance of binary Mg-Ca alloys using duplex aluminum-chromium coatings
Al-AlCr was coated on Mg-Ca and Mg-Zn-Ce-La alloys using physical vapor deposition method. The surface morphology of the specimens was characterized by x-ray diffraction, scanning electron microscopy equipped with energy-dispersive x-ray spectroscopy, and atomic force microscopy (AFM). The AFM resul...
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2015
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| author | Daroonparvar, Mohammadreza Mat Yajid, Muhamad Azizi Mohd. Yusof, Noordin Bakhsheshi-Rad, Hamid Reza Adabi, Mohsen Hamzah, Esah Kamali, Hussein Ali |
| author_facet | Daroonparvar, Mohammadreza Mat Yajid, Muhamad Azizi Mohd. Yusof, Noordin Bakhsheshi-Rad, Hamid Reza Adabi, Mohsen Hamzah, Esah Kamali, Hussein Ali |
| author_sort | Daroonparvar, Mohammadreza |
| collection | ePrints |
| description | Al-AlCr was coated on Mg-Ca and Mg-Zn-Ce-La alloys using physical vapor deposition method. The surface morphology of the specimens was characterized by x-ray diffraction, scanning electron microscopy equipped with energy-dispersive x-ray spectroscopy, and atomic force microscopy (AFM). The AFM results indicated that the average surface roughness of Al-AlCr coating on the Mg-Ca alloy is much lower than that of Al-AlCr coating on the Mg-Zn-Ce-La alloy. However, Al-AlCr coating on the Mg-Ca alloy presented a more compact structure with fewer pores, pinholes, and cracks than Al-AlCr coating on the Mg-Zn-Ce-La alloy. Electrochemical studies revealed that the novel coating (Al-AlCr) can remarkably reduce the corrosion rate of the Mg-Ca alloy in 3.5 wt.% NaCl solution. It was seen that the anodic current density of the Al-AlCr-coated Mg-Ca alloy was very small when compared to the Al-AlCr-coated Mg-Zn-Ce-La and uncoated alloys. Impedance modulus (Z) of the Al-AlCr-coated samples was higher than that of the bare Mg alloys. Z of Al-AlCr-coated Mg-Ca alloy was higher than that of the Al-AlCr-coated Mg-Zn-Ce-La alloy at low frequency |
| first_indexed | 2024-03-05T19:38:29Z |
| format | Article |
| id | utm.eprints-55710 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T19:38:29Z |
| publishDate | 2015 |
| publisher | Springer |
| record_format | dspace |
| spelling | utm.eprints-557102017-02-15T01:48:57Z http://eprints.utm.my/55710/ Improvement of corrosion resistance of binary Mg-Ca alloys using duplex aluminum-chromium coatings Daroonparvar, Mohammadreza Mat Yajid, Muhamad Azizi Mohd. Yusof, Noordin Bakhsheshi-Rad, Hamid Reza Adabi, Mohsen Hamzah, Esah Kamali, Hussein Ali TJ Mechanical engineering and machinery Al-AlCr was coated on Mg-Ca and Mg-Zn-Ce-La alloys using physical vapor deposition method. The surface morphology of the specimens was characterized by x-ray diffraction, scanning electron microscopy equipped with energy-dispersive x-ray spectroscopy, and atomic force microscopy (AFM). The AFM results indicated that the average surface roughness of Al-AlCr coating on the Mg-Ca alloy is much lower than that of Al-AlCr coating on the Mg-Zn-Ce-La alloy. However, Al-AlCr coating on the Mg-Ca alloy presented a more compact structure with fewer pores, pinholes, and cracks than Al-AlCr coating on the Mg-Zn-Ce-La alloy. Electrochemical studies revealed that the novel coating (Al-AlCr) can remarkably reduce the corrosion rate of the Mg-Ca alloy in 3.5 wt.% NaCl solution. It was seen that the anodic current density of the Al-AlCr-coated Mg-Ca alloy was very small when compared to the Al-AlCr-coated Mg-Zn-Ce-La and uncoated alloys. Impedance modulus (Z) of the Al-AlCr-coated samples was higher than that of the bare Mg alloys. Z of Al-AlCr-coated Mg-Ca alloy was higher than that of the Al-AlCr-coated Mg-Zn-Ce-La alloy at low frequency Springer 2015-07 Article PeerReviewed Daroonparvar, Mohammadreza and Mat Yajid, Muhamad Azizi and Mohd. Yusof, Noordin and Bakhsheshi-Rad, Hamid Reza and Adabi, Mohsen and Hamzah, Esah and Kamali, Hussein Ali (2015) Improvement of corrosion resistance of binary Mg-Ca alloys using duplex aluminum-chromium coatings. Journal of Materials Engineering and Performance, 27 (7). pp. 2614-2627. ISSN 1059-9495 http://dx.doi.org/10.1007/s11665-015-1543-9 DOI:10.1007/s11665-015-1543-9 |
| spellingShingle | TJ Mechanical engineering and machinery Daroonparvar, Mohammadreza Mat Yajid, Muhamad Azizi Mohd. Yusof, Noordin Bakhsheshi-Rad, Hamid Reza Adabi, Mohsen Hamzah, Esah Kamali, Hussein Ali Improvement of corrosion resistance of binary Mg-Ca alloys using duplex aluminum-chromium coatings |
| title | Improvement of corrosion resistance of binary Mg-Ca alloys using duplex aluminum-chromium coatings |
| title_full | Improvement of corrosion resistance of binary Mg-Ca alloys using duplex aluminum-chromium coatings |
| title_fullStr | Improvement of corrosion resistance of binary Mg-Ca alloys using duplex aluminum-chromium coatings |
| title_full_unstemmed | Improvement of corrosion resistance of binary Mg-Ca alloys using duplex aluminum-chromium coatings |
| title_short | Improvement of corrosion resistance of binary Mg-Ca alloys using duplex aluminum-chromium coatings |
| title_sort | improvement of corrosion resistance of binary mg ca alloys using duplex aluminum chromium coatings |
| topic | TJ Mechanical engineering and machinery |
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