Effects of Current Density on the Microstructure and the Corrosion Resistance of Alumina Coatings Embedded with SiC Nano-particles Produced by Micro-arc Oxidation |
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| Authors: | Yue Yang ) Yaohui Liu ) ) Key Laboratory of Advanced Structural Materials Ministry of Education Changchun University of Technology Changchun China ) Key Lab of Automobile Materials College of Materials Science Engineering Jilin University Changchun China |
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| Affiliation: | Yue Yang 1) and Yaohui Liu 2) 1) Key Laboratory of Advanced Structural Materials,Ministry of Education,Changchun University of Technology,Changchun 130012,China 2) Key Lab of Automobile Materials,College of Materials Science and Engineering,Jilin University,Changchun 130025,China |
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| Abstract: | To improve the surface corrosion resistance of the alumina films fabricated by micro-arc oxidation (MAO),Al2O3 coatings at different current densities (5,7 and 10 A/dm 2) were produced on aluminum alloys by adding SiC nano-particles into electrolyte during MAO process.The morphology and phase composition of the coatings were investigated by scanning electron microscopy (SEM) and X-ray diffraction (XRD),respectively.Furthermore,the corrosion performance of the coatings was evaluated via a three-electrode sys... |
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| Keywords: | Micro-arc oxidation SiC nano-particles Corrosion resistance |
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