Surface Modifications of Mg Alloys Based on Micro-Arc Oxidation Methods from Manufacturing Perspectives
Chemically and mechanically protective coatings are formed on surface of Magnesium alloys by micro-arc oxidation (MAO) methods. From manufacturing perspectives, modification of the obtained MAO surfaces was made in two aspects. Firstly, the protection is enhanced by forming super-hydrophobic surface...
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| Veröffentlicht in: | Applied Mechanics and Materials 2014-04, Vol.548-549 (Achievements in Engineering Sciences), p.284-288 |
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| container_issue | Achievements in Engineering Sciences |
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| container_title | Applied Mechanics and Materials |
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| creator | Lai, Gary Zhang, Xue Zhu Li, Echo So, King Ho Tao, Hong |
| description | Chemically and mechanically protective coatings are formed on surface of Magnesium alloys by micro-arc oxidation (MAO) methods. From manufacturing perspectives, modification of the obtained MAO surfaces was made in two aspects. Firstly, the protection is enhanced by forming super-hydrophobic surfaces, with water contact angle higher than 120o, attributed to hierarchical nanomicro structures. The overall process involves alkaline etching to form nanoscale structures on top of micro-porous surface achieved during micro-arc oxidation processes. Secondly, the electrical property of the MAO surfaces is modified. A film with electrical conductivity of 2.4Ω/sq is achieved by Ni deposition and characterized by four point probe measurement. The morphology, phase, and chemical composition of all surfaces are investigated by SEM and XRD analysis. |
| doi_str_mv | 10.4028/www.scientific.net/AMM.548-549.284 |
| format | Article |
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From manufacturing perspectives, modification of the obtained MAO surfaces was made in two aspects. Firstly, the protection is enhanced by forming super-hydrophobic surfaces, with water contact angle higher than 120o, attributed to hierarchical nanomicro structures. The overall process involves alkaline etching to form nanoscale structures on top of micro-porous surface achieved during micro-arc oxidation processes. Secondly, the electrical property of the MAO surfaces is modified. A film with electrical conductivity of 2.4Ω/sq is achieved by Ni deposition and characterized by four point probe measurement. 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| source | Scientific.net Journals |
| subjects | Deposition Electrical properties Electrical resistivity Magnesium base alloys Nanostructure Nickel Oxidation Resistivity |
| title | Surface Modifications of Mg Alloys Based on Micro-Arc Oxidation Methods from Manufacturing Perspectives |
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