Comparative study of the corrosion behavior of galvanized, galvannealed and Zn55Al coated interstitial free steels
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- 作者：A. Pritzel dos Santosa ; alvaropritzel@yahoo.com.br" class="auth_mail" title="E-mail the corresponding author ; S.M. Manhaboscoa ; smanhabosco@gmail.com" class="auth_mail" title="E-mail the corresponding author ; J.S. Rodriguesa ; b ; joelufrgs@gmail.com" class="auth_mail" title="E-mail the corresponding author ; L.F.P. Dicka ; lfdick@ufrgs.br" class="auth_mail" title="E-mail the corresponding author
- 关键词：Hot dip galvanized ; GI ; Galvanneal ; Zn55Al ; Galvalume ; SVET
- 刊名：Surface and Coatings Technology
- 出版年：2015
- 出版时间：15 October 2015
- 年：2015
- 卷：279
- 期：Complete
- 页码：150-160
- 全文大小：3111 K
文摘
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Hot dip coatings on steel galvanized (GI), galvanneal (GA) and Zn55Al were compared in 0.1 M NaCl.
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SVET shows that the protection on cut-edges is always by localized corrosion of the 3 coatings.
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Polarized Zn55Al and GI consume completely before perforation; protection due to FeAl3 on Zn55Al–
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Polarized GA perforates after consumption of ~ 70% of a equivalent GI coating
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At OCP dissolution of GA is slower than GI and Zn55Al and will provide longer protection.