Influence of electron beam liquid phase surface treatments on the corrosion resistance of AZ91D using different additive deposition techniques |
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| Affiliation: | 1. Research Institute of Surface Engineering, Taiyuan University of Technology, Taiyuan 030024, China;2. Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China;1. Altai State University, 61 Lenin av., 656049 Barnaul, Russian Federation;2. Institute of Strength Physics and Materials Science SB RAS, 2 Akamichesky av., 634021 Tomsk, Russian Federation;3. Institute of Geology and Mineralogy SB RAS, 3 Academician Koptyug ave., 630090 Novosibirsk, Russian Federation;4. Novosibirsk State University, 2 Pirogova str., 630090 Novosibirsk, Russian Federation;1. Qatar University, Center of Advanced Materials, 2713 Doha, Qatar;2. Department of Metallurgical and Materials Engineering, Faculty of Petroleum and Mining Engineering, Suez University, 43721 Suez, Egypt |
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| Abstract: | Electron beam alloying (EBA) and electron beam cladding (EBC) were applied on AZ91D using Al-based additives. For EBA, additives were pre-deposited by atmospheric plasma spraying (APS) and cold gas spraying (CGS). In the case of EBC, a wire was used for in situ additive deposition. Polarisation test were carried out to investigate the corrosion behaviour of layers with Mg-rich (EBA) and Al-rich (EBC) layer matrices depending on the element contents of Mg, Al, and Si. In 0.001 M NaCl solution, the corrosion potential is significantly improved compared with the untreated AZ91D and corrosion current densities of the AlSi12 reference material are approached. |
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| Keywords: | A. Aluminium A. Magnesium A. Metal coatings B. Polarisation |
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