Optimization of coil coating systems by means of electrochemical impedance spectroscopy

被引:10
作者
Delucchi, M [1 ]
Barbucci, A [1 ]
Cerisola, G [1 ]
机构
[1] Univ Genoa, Fac Ingn, Ist Chim, I-16129 Genoa, Italy
关键词
EIS; coil-coating; free-chromate pretreatments and primers; fluorinated coatings;
D O I
10.1016/S0013-4686(99)00145-0
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Corrosion protection of coil-coated hot-dip galvanized (HDG) sheets against aggressive environments depends on several factors linked to galvanizing, chemical conversion, passivation, primer, topcoat. Each component gives a contribution to the final anticorrosive performance of the coated product. The study of such a complex system needs proper sample assessments and powerful experimental techniques. The present paper deals with the study of a significant number of systems using a particular approach based on the analysis of the impedance data at one characteristic frequency. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:4297 / 4305
页数:9
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