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Anodizing of Al6061 alloy was conducted in two different electrolytes of 20% sulfuric acid and 8% sulfuric acid + 3 % oxalic acid solutions at a constant current or decreasing current density conditions, and its dielectric breakdown voltage was measured. The surface morphology of anodic oxide films was observed by TEM and thermal treatment was carried out at 400 ℃ for 2 h to evaluate the resistance of the anodic oxide films to crack initiation. The anodic oxide film formed in 8% sulfuric acid + 3% oxalic acid solution showed higher dielectric breakdown voltage and better resistance to crack initiation at 400 ℃ than that formed in 20% sulfuric acid solution. The dielectric breakdown voltage increased 6 ~12% by applying decreasing current density comparing with a constant current density.
목차
Abstract
1. 서론
2. 실험 방법
3. 결과 및 고찰
4. 결론
References
참고문헌 (8)
참고문헌 신청
S. Moon, Anodic oxidation treatment methods of metals, Journal of the Korean Institute of Surface Engineering, 51 (2018) 1-10.
Y.S. Jeong, Y. H. Park, K. S. Jang, S. Moon, J. Choi, Y. M. Jeong, Practical surface treatment technology, 5 (2014).
S. Moon, S. Moon, S. Lim, Formation characteristics of hard anodizing films on 6xxx aluminum alloys, Journal of the Korean Institute of Surface Engineering, 52 (2019) 203-210.
S. Moon, K. Jeong, S. Lim, Formation behavior of anodic oxide films on Al6061 alloy in sulfuric acid solution, Journal of the Korean Institute of Surface Engineering, 51 (2018) 393-399.
S. Moon, Y. Nam, C. Yang, Y. Jeong, Growth of anodic oxide films on AC2A alloy in sulphuric acid solution, Corrosion Science, 53 (2011) 1547-1553.
Y.S. Jeong, Y. H. Park, K. S. Jang, S. Moon, J. Choi, Y. M. Jeong, Practical surface treatment technology, 5 (2014).
S. Moon, S. Moon, S. Lim, Formation characteristics of hard anodizing films on 6xxx aluminum alloys, Journal of the Korean Institute of Surface Engineering, 52 (2019) 203-210.
S. Moon, K. Jeong, S. Lim, Formation behavior of anodic oxide films on Al6061 alloy in sulfuric acid solution, Journal of the Korean Institute of Surface Engineering, 51 (2018) 393-399.
S. Moon, Y. Nam, C. Yang, Y. Jeong, Growth of anodic oxide films on AC2A alloy in sulphuric acid solution, Corrosion Science, 53 (2011) 1547-1553.
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