지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
Al2024 aluminum alloy specimens were exposed to atmospheric conditions for maximum 24 months and analyzed by electron microscopes to characterize their corrosion behavior and oxide film characteristics. As the exposure time increased from 12 months to 24 months, the number of pitting sites per 1 mm² increased from ~100 to ~200. The uniform oxidation (or non-pitting) region of the 12-month exposure specimen showed 30~120 ㎚ thick oxide layer, whereas the 24-month exposure specimen showed 170~200 ㎚ thick oxide with the local oxygen penetration region up to 1 ㎛ deep. There was no local corrosion area observed in the 12-month exposure specimen except pitting. However, in the 24-month exposure specimen, local oxygen penetration region was observed beneath the uniform oxide layer and near the pitting cavity. Al2024 showed two times thicker uniform oxide layer but much shallower local oxygen penetration region than Al1050, which appears to be related to low Si concentration. Further research is needed on the effects of Mg segregation near the tip of the oxygen penetration region.
목차
Abstract
1. 서론
2. 실험방법
3. 결과 및 고찰
4. 결론
References
참고문헌 (24)
참고문헌 신청
ASM International, ASM Handbook Vol 13A Corrosion: Fundamentals, Testing, and Protection, 2003, pp. 196-209.
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S. Sun, Q. Zheng, D. Li, J. Wen, Long-term atmospheric corrosion behaviour of aluminium alloys 2024 and 7075 in urban, coastal and industrial environments, Corros. Sci. 51 (2009) 719-727.
B. B. Wang, Z. Y. Wang, W. Han, W. Ke, Atmospheric corrosion of aluminum alloy 2024-T3 exposed to salt lake environment in Western China, Corros. Sci. 59 (2012) 63-70.
S. Sun, S. Chen, Y. Ma, Q. Zheng, S. Hu, Exfoliation Corrosion of Extruded AA2024-T4 in the Industrial and Coastal-Industrial Environment, Corrosion 70 (2014) 1064-1073.
N. D. Alexopoulos, C. J. Dalakouras, P. Skarvelis, S. K. Kourkoulis, Accelerated corrosion exposure in ultra thin sheets of 2024 aircraft aluminum alloy for GLARE applications, Corro. Sci. 55 (2012) 289-300.
S. Sun, Q. Zheng, D. Li, J. Wen, Long-term atmospheric corrosion behaviour of aluminium alloys 2024 and 7075 in urban, coastal and industrial environments, Corros. Sci. 51 (2009) 719-727.
B. B. Wang, Z. Y. Wang, W. Han, W. Ke, Atmospheric corrosion of aluminum alloy 2024-T3 exposed to salt lake environment in Western China, Corros. Sci. 59 (2012) 63-70.
S. Sun, S. Chen, Y. Ma, Q. Zheng, S. Hu, Exfoliation Corrosion of Extruded AA2024-T4 in the Industrial and Coastal-Industrial Environment, Corrosion 70 (2014) 1064-1073.
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