Search | Korea Science

Gwang-Soo Choi;Young-Man Kim;Chan-Jin Park
- Corrosion Science and Technology
- /
- v.22 no.5
- /
- pp.305-313
- /
- 2023
The objective of this study was to investigate the effectiveness of sodium dodecyl benzene sulfonate (SDBS) as a corrosion inhibitor on the pitting corrosion behavior of aluminum alloys used in electric vehicle battery cooling systems within a mixture of ethylene glycol and water (EG-W) coolant. Potentiodynamic polarization testing revealed unstable passive film formation on the aluminum alloys in the absence of SDBS. However, the addition of SDBS resulted in a robust passive film, enhancing the pitting corrosion resistance across all examined alloys. Pitting corrosion was predominantly observed near intermetallic compounds in the presence of Cl? ions, which was attributed to galvanic interactions. Among tested alloys, A1040 demonstrated superior resistance due to its lower areal fraction of precipitates and donor density. The incorporation of SDBS inhibitors mitigated the overall pitting corrosion process by hindering Cl? ion penetration. These findings suggest that SDBS can significantly improve pitting corrosion resistance in aluminum alloys employed in battery coolant environments.
https://doi.org/10.14773/cst.2023.22.5.305 인용 PDF

A. ZAKIYUDDIN;K. LEE
- Archives of Metallurgy and Materials
- /
- v.63 no.3
- /
- pp.1467-1471
- /
- 2018
The objective of the present study was to investigate the effects of Sn addition on the mechanical and corrosion properties of Mg-1Zn-1Zr-xSn (x = 1, 2, 3, 4, 5 wt.%) alloys prepared by powder-in-tube rolling (PTR) method. The PTR-treated Mg alloys reached 98.3% of theoretical density. The hardness of the alloy increased with Sn addition. Two main intermetallic phases, Mg₂Sn and Zn₂Zr₃, were formed in the alloys. The Mg₂Sn intermetallic particles were observed along the grain boundaries, while the Zn₂Zr₃ particles were distributed in the Mg matrix. The addition of 1 wt. % Sn caused the corrosion potential to shift toward a more positive value, and the resulting alloy exhibited low corrosion current density.
https://doi.org/10.24425/123831 인용