Sol-gel coatings doped with organosilane and cerium to improve the properties of hot-dip galvanized steel

被引：58
|
作者：
Su, Hsiang-Yu [1 ]
Chen, Pei-Li [2 ]
Lin, Chao-Sung [1 ]
机构：
[1] Natl Taiwan Univ, Dept Mat Sci & Engn, Taipei 106, Taiwan
[2] China Steel Corp, New Mat R&D Dept, Kaohsiung 812, Taiwan
来源：
CORROSION SCIENCE | 2016年 / 102卷
关键词：
Zinc; EIS; EPMA; XPS; Passive films; SELF-HEALING PROPERTIES; CORROSION-RESISTANCE; CONVERSION COATINGS; ELECTROCHEMICAL ASSESSMENT; SILANE SOLUTIONS; ZINC SURFACE; FILMS; PRETREATMENTS; PERFORMANCE; PROTECTION;
D O I：
10.1016/j.corsci.2015.09.019
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An inorganic sot-gel coating and an inorganic/organic hybrid sol-gel coating without and with cerium nitrate were made on hot-dip galvanized steel via a roll coating process. Results showed that the corrosion resistance of the hot-dip galvanized steel was improved with the inorganic coating: however, cracks were present in the coating. Cracks were effectively eliminated and paintability of the sol-gel coating was enhanced while doped with organic precursor. The corrosion resistance and self-healing capability were further enhanced when cerium cation was doped. Finally, the corrosion protection mechanism of the various coatings was discussed in detail. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：63 / 71
页数：9
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