Abstract
The polarization measurements and electrochemical impedance spectroscopy(EIS) were used to study the corrosion electrochemical behavior of AM60 magnesium alloys in three kinds of commercial coolants for automobile engine.Results show that the tested commercial coolants are slightly corrosive to AM60 magnesium alloys and their corrosivity varies from coolant to coolant.The coolant C is the least corrosive among the studied commercial coolants and the coolant A is more corrosive than the coolant B and C.The coolant C appears to be the most promising coolant for automobile engine made by magnesium alloys.The coolant resistivity plays an important role in the corrosion of AM60 magnesium alloys in commercial coolants,and the competitive adsorption of coolant components(such as ethylene glycol and the additives) on AM60 surface is also responsible for the corrosion behavior.
Keywords
magnesium alloy, commercial coolant, corrosion
Publication Date
2010-11-28
Online Available Date
2010-11-28
Revised Date
2010-11-28
Received Date
2010-11-28
Recommended Citation
Ling-jie LI, Sha WANG, Yin XIAO, Jun LAN, Jing-lei LEI, Sheng-tao ZHANG, Fu-sheng PAN.
Corrosion Electrochemical Behavior of AM60 Magnesium Alloys in Automobile Engine Coolants[J]. Journal of Electrochemistry,
2010
,
16(4): 425-429.
DOI: 10.61558/2993-074X.2065
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol16/iss4/11
References
[1]Stalmann A,Sebastian W,Friedrich H,et al.Propertiesand processing of magnesium wrought products for auto-motive applications[J].Advanced Engineering Materi-als,2001,3(12):969-974.
[2]Luo A A.Magnesium:current and potential automotiveapplications[J].Jom,2002,54:42-48.
[3]Niu L,Cheng Y F.Synergistic effects of fluid flow andsand particles on erosion-corrosion of aluminum in ethyl-ene glycol-water solutions[J].Wear,2008,265(3/4):367-374.
[4]Zhou W,Aung NN,Choudhary A,et al.Evolution of cor-rosion in cast Al alloy in antifreeze radiator coolant[J].Materials and Corrosion,2008,59(12):954-958.
[5]Song G,St John D H.Corrosion of magnesium alloys incommercial engine coolants[J].Materials and Corro-sion,2005,56(1):15-23.
[6]Song Guang-ling(宋光铃).Corrosion and protection ofmagnesium alloys[M].Beijing:Chemical Industry Pres-s,2006:200-203.
[7]Cao Chu-nan(曹楚南),Zhang Jian-qing(张鉴清).In-troduction of electrochemical impedance spectroscopy[M].2nd edition.Beijing:Science Press,2002.26-27.
[8]Song G,St John D H.Corrosion behaviour of magnesiumin ethylene glycol[J].Corrosion Science,2004,46:1381-1399.
[9]Fekry A M,Fatayerji MZ.Electrochemical corrosion be-havior of AZ91D alloy in ethylene glycol[J].Electro-chimica Acta,2009,54:6522-6528.
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