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涂敷型钝化电镀锌钢板黑变膜组成及形成研究
引用本文:卢燕平,方百友,FANG Bai-you. 涂敷型钝化电镀锌钢板黑变膜组成及形成研究[J]. 材料保护, 2000, 33(12): 11-13
作者姓名:卢燕平  方百友  FANG Bai-you
作者单位:1. 北京科技大学腐蚀系 100083
2. 屈祖玉宝山钢铁集团公司技术部 上海201900
基金项目:国家“九五”重点科技攻关课题(9552701-04)
摘    要:应用SEM、EDX和XPS等分析手段研究了涂油钝化是镀锌钢板表面黑变膜的外观、形貌、组成与结构,并对黑变的形成进行了讨论。结果表明,黑变膜厚度约100nm,它是以ZnO1-x为主,并由ZnO、Zn(OH)2、Cr2O3、CrOOH、SiO2及微量CrO3等物质组成,但膜表层Zn是以ZnO形态存在,膜内层则以非化学计量化合物ZnO1-x形态存在。黑变是镀锌层膜下腐蚀与光的干涉作用所致。

关 键 词:电镀锌板 黑变膜 铬酸盐 二氧化硅 转化膜 涂敷型
文章编号:1001-1560(2000)l2-0011-03

An Investigation of Black Tarnished Film on CrO3-SiO2 Passivated Electrogalvanized Steel Sheet
LU Yan-ping,QU Zu-yu,FANG Bai-you. An Investigation of Black Tarnished Film on CrO3-SiO2 Passivated Electrogalvanized Steel Sheet[J]. Journal of Materials Protection, 2000, 33(12): 11-13
Authors:LU Yan-ping  QU Zu-yu  FANG Bai-you
Abstract:The appearance, morphology, composition and structure of black tarnished film on CrO3-SiO2 passivated electrogalvanized steel sheet were investigated by SEM, EDX and XPS.It was shown that the black tarnished film was composed of ZnO1-8, ZnO, Zn(OH)2, Cr2O3, CrOOH, SiO2 and trace CrO3. Zinc existed as ZnO in the surface layer and as non-stoichimetric compound ZnOl -x in the inner layer of the black tarnished film. The formation mechanism of black tarnished film wasdiscussed comprehensively.
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