Effect of Foreign Ions on Corrosion Resistance of AA5052 Aluminum Alloy in the Simulated Coolant

YOU Liang - zhou, HENG Shi - quan, LU Jia - min, LI Xiao - hui, GAO Li - xin, ZHANG Da - quan

doi:10.16577/j.issn.1001-1560.2022.0189

Materials Protection >

2022 , Vol. 55 >Issue 7: 96 - 101

DOI: https://doi.org/10.16577/j.issn.1001-1560.2022.0189

Effect of Foreign Ions on Corrosion Resistance of AA5052 Aluminum Alloy in the Simulated Coolant

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1. Huadian Electric Power Research Institute Co., Ltd., Hangzhou 310030, China;2. School of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai 200090, China

Received date: 2022-01-26

Revised date: 2022-03-10

Accepted date: 2022-04-05

Online published: 2023-12-15

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Abstract

In order to study the effect of metal ions on the corrosion of aluminum alloy, the corrosion resistance of AA5052 aluminum alloy in the simulated coolant (33% glycol solution) containing foreign ions (Cl-, Fe3+, Cu2+) was investigated by weight - loss method, plasma chromatography and the scanning electron microscope (SEM). Results showed that the corrosion reaction of AA5052 aluminum alloy in the above - mentioned solution followed a first - order kinetic process. Foreign ions accelerated the corrosion reaction of AA5052 alloy in the stimulate coolant. Besides, the order of corrosion rates of AA5052 aluminum alloy in glycol solutions containing different complex foreign ions was as follow: [Fe3++Cu2+]>[Fe3++Cu2++Cl-]>[Fe3++Cl-]>[Cu2++Cl-].

Key words： simulated coolant; foreign ions; aluminum alloy; corrosion

Cite this article

YOU Liang - zhou, HENG Shi - quan, LU Jia - min, LI Xiao - hui, GAO Li - xin, ZHANG Da - quan . Effect of Foreign Ions on Corrosion Resistance of AA5052 Aluminum Alloy in the Simulated Coolant[J]. Materials Protection, 2022 , 55(7) : 96 -101 . DOI: 10.16577/j.issn.1001-1560.2022.0189

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