Effect of 5%Mg alloying in Al wire on corrosion resistance performanceinsalinesolution식염수에서 내식성 성능에 대한 Al 와이어의 5%Mg 합금 효과
- Other Titles
- 식염수에서 내식성 성능에 대한 Al 와이어의 5%Mg 합금 효과
- Authors
- 싱 지텐드라 쿠마르; 이한승
- Issue Date
- Apr-2022
- Publisher
- 한국건축시공학회
- Keywords
- wire; corrosion; solution; open circuit potential; electrochemical impedance spectroscopy
- Citation
- 한국건축시공학회 2022 봄학술발표대회 논문집, v.22, no.1, pp 93 - 94
- Pages
- 2
- Indexed
- OTHER
- Journal Title
- 한국건축시공학회 2022 봄학술발표대회 논문집
- Volume
- 22
- Number
- 1
- Start Page
- 93
- End Page
- 94
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/114028
- Abstract
- The presence of chloride (Cl-) ions in environments causes localized corrosion resulting decrease the durability of the structures. In
this study, 5% Mg containing Al alloys (Al-5Mg) wire used vis-à-vis compared its corrosion resistance with pure Al in 3.5wt.% NaCl
solution with exposure periods. Initially both wires exhibited identical open circuit potential (OCP) attributed to the presence of
native oxide film on the surface but with the exposure periods it shifted towards active direction owing to the dissolution of oxide film.
The pure Al continuously shifted the OCP towards active direction while Al-5Mg shows stabilization of OCP after 8 days of exposure.
The OCP of Al-5Mg is slightly higher compared to pure Al wire owing to the activeness of Mg. The total impedance of the Al-5Mg alloy
is almost three times greater than pure Al with exposure periods in 3.5 wt.% NaCl solution. It might be formation of Al-Mg LDH
(layered double hydroxide) thin film onto the surface.
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