期刊
SURFACE & COATINGS TECHNOLOGY
卷 201, 期 6, 页码 2358-2363出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2006.04.012
关键词
hot-dip galvanization; zinc coating; zinc oxide; alloy layers; corrosion
The formation of ZnO composite-rich inner layers and its impact on the galvanization process and characteristics of hot-dip zinc coating were explored in the present study. Steel substrates were initially coated with a fragmented layer of ZnO and then subsequently galvanized. The presence of ZnO-rich inner layer influenced the galvanizing process substantially. The process resulted in the formation of more adherent layers with lower coating thickness. The presence of the inner oxide layer caused a modification of the inner alloy structure and the coating composition. The physical, mechanical as well as galvanic performance of the coating were also improved by the presence of the ZnO-rich inner alloy layers. (c) 2006 Elsevier B.V. All rights reserved.
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