Study of chromate-free pretreatments and primers for the protection of galvanised steel sheets

被引：20

作者：

Barbucci, A ^{[1
]}

Delucchi, M ^{[1
]}

Cerisola, G ^{[1
]}

机构：

[1] Univ Genoa, Fac Ingn, Inst Chim, I-16129 Genoa, Italy

来源：

PROGRESS IN ORGANIC COATINGS | 1998年 / 33卷 / 02期

关键词：

EIS; coil coating; free chromate pretreatment; free chromate primer;

D O I：

10.1016/S0300-9440(98)00046-0

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Environmental problems in the coil-coating industry have caused a trend towards non-polluting pretreatment/primer combinations. In this work some environmentally-friendly systems have been studied. impedance spectroscopy on deformed (T-bent) and damaged samples has been used as a tool to obtain a selective evaluation of the best systems. Nitro-cobalt chemical conversion, with fluo-zirconate passivation coated by an epoxy-polyurethane primer having ionic exchange active pigments, gave the best solution for the systems studied. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：131 / 138

页数：8

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