IBS Publications Repository: Investigation of Zirconium effect on the corrosion resistance of aluminum alloy using electrochemical methods and numerical simulation in an acidified synthetic sea salt solution

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IBS Publications RepositoryCenter for Integrated Nanostructure Physics(나노구조물리 연구단)1. Journal Papers (저널논문)

Investigation of Zirconium effect on the corrosion resistance of aluminum alloy using electrochemical methods and numerical simulation in an acidified synthetic sea salt solution

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Title: Investigation of Zirconium effect on the corrosion resistance of aluminum alloy using electrochemical methods and numerical simulation in an acidified synthetic sea salt solution

Author(s): Yong-Sang Kim; Jong Gil Park; Byeong-Seon An; Young Hee Lee; Cheol-Woong Yang; Jung-Gu Kim

Subject: Aluminum alloy, ; Corrosion, ; Intermetallic compound, ; Transmission electron microscopy, ; Zirconium

Publication Date: 2018-10

Journal: MATERIALS, v.11, no.10, pp.1982

Publisher: MDPI

Abstract: Corrosion resistance of Zr that has been added to an Al alloy (U1070) is higher than that of a commercial Al alloy (A1070). A decreasing number and size of Al3Fe intermetallic particles (IMPs) were observed by electron microprobe analysis and transmission electron microscopy. Based on the numerical corrosion simulation, it was confirmed that decreasing the number and size of IMPs was favorable for improving the corrosion resistance of the Al alloy due to the reduction of the galvanic effect. In addition, Al3Zr was found to be insignificant in promoting galvanic corrosion within the Al matrix. Thus, Zr is an advantageous alloying element for improving the corrosion resistance of the Al alloy. © 2018 by the authors