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Electrochemical Corrosion Behavior of Two Al-based Alloys in 3% NaCl Solution

Xiaodong Kong

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Abstract

Linear polarization curves and cyclic voltammetry were used to study the corrosion behavior of two Al-alloys in 3%NaCl solutions.Scanning electron microscopy(SEM) was employed in investigating microstructure of the two Al-alloys.The results show that the corrosion rate of the alloy ZL102(A) is much smaller than the alloy LF6(B) on the whole,as well as the sensitivity to pitting corrosion and the growth tendency of corrosion pits.The pitting corrosion resistance is different between the alloy A and B because of the existence of impurities.

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What this paper is about

Linear polarization curves and cyclic voltammetry were used to study the corrosion behavior of two Al-alloys in 3%NaCl solutions.Scanning electron microscopy(SEM) was employed in investigating microstructure of the two Al-alloys.The results show that the corrosion rate of the alloy ZL102(A) is much smaller than the alloy LF6(B) on the whole,as well as the sensitivity to pitting corrosion and the growth tendency of corrosion pits.The pitting corrosion resistance is different between the alloy A and B because of the existence of impurities.

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Available abstract

Linear polarization curves and cyclic voltammetry were used to study the corrosion behavior of two Al-alloys in 3%NaCl solutions.Scanning electron microscopy(SEM) was employed in investigating microstructure of the two Al-alloys.The results show that the corrosion rate of the alloy ZL102(A) is much smaller than the alloy LF6(B) on the whole,as well as the sensitivity to pitting corrosion and the growth tendency of corrosion pits.The pitting corrosion resistance is different between the alloy A and B because of the existence of impurities.

Key concepts: Corrosion, Materials science, Alloy, Microstructure, Metallurgy, Polarization (electrochemistry), Pitting corrosion, Scanning electron microscope

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