Long-term use of galvanized steel in external applications. Aspects of patina formation, zinc runoff, barrier properties of surface treatments, and coatings and environmental fate

被引：40

作者：

Lindstrom, David ^{[1
]}

Wallinder, Inger Odnevall ^{[1
]}

机构：

[1] KTH, Div Surface & Corros Sci, Dept Chem, Sch Chem Sci & Engn, S-10044 Stockholm, Sweden

来源：

ENVIRONMENTAL MONITORING AND ASSESSMENT | 2011年 / 173卷 / 1-4期

关键词：

Hot-dipped galvanized steel; Galvanized steel; Corrosion; Zinc runoff; Patina; Surface treatments; Coatings; CORROSION-INDUCED ZINC; ATMOSPHERIC CORROSION; ROOFING MATERIALS; INDUSTRIAL ATMOSPHERE; CHEMICAL SPECIATION; ORGANIC COATINGS; COPPER; RATES; CHROMATE; WATER;

D O I：

10.1007/s10661-010-1377-8

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Galvanized steel structures are used in a large variety of external constructions in the modern urban society, and their beneficial properties from a corrosion and oxidation perspective are well known. Less investigated is the extent of their contribution to the diffuse dispersion of zinc in the society and also to the environmental fate of corrosion-induced released zinc. This paper presents long-term runoff rates of zinc from galvanized steel surfaces with main focus on hot-dipped galvanized steel exposed for up to 10 years at nonsheltered urban atmospheric conditions. The long-term capacities of a naturally formed patina and the presence of surface treatments and coatings to hinder and reduce corrosion-induced zinc runoff from galvanized steel are elucidated. The environmental interaction of zinc runoff and concrete surfaces in pavement and urban storm drain systems is highlighted and the high capacity of concrete to retain released zinc presented.

引用

页码：139 / 153

页数：15

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