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中国腐蚀与防护学报  2009, Vol. 29 Issue (3): 172-176    
  研究报告 本期目录 | 过刊浏览 |
镀锌层破损汽车钢板的腐蚀行为研究
张红1;杜翠薇1;李晓刚1;2;齐慧滨3
1.北京科技大学腐蚀与防护中心 北京 100083
2.中国科学院金属研究所 金属腐蚀与防护国家重点实验室 沈阳 110016
3.宝钢研究院焊接与表面技术研究所 上海 201900
CORROSION PROPERTIES OF AUTO GALVANIZED STEEL SHEET WITH VARIOUS BROKEN AREAS OF THE ZINC COATING
ZHANG Hong1;DU Cuiwei1;LI Xiaogang1;2;QI Huibin3
1. Corrosion and Protection Center; University of Science and Technology Beijing; Beijing 100083
2. State Key Laboratory for Corrosion and Protection; Institute of Metal Research; Chinese Academy of Sciences;Shenyang  110016
3. Institute of Welding and Surface Technology; R & D of Baosteel; Shanghai 201900
全文: PDF(1461 KB)  
摘要: 

采用稀盐酸溶解汽车板部分镀锌层,研究了镀层破损率不同试样在5%NaCl溶液中的腐蚀行为,并对腐蚀产物形貌进行了观察。结果表明:在腐蚀初期,镀锌层试样的腐蚀速率高于基板,镀层的消耗对试样失重起主要贡献;试样的整体腐蚀速率随镀层破损率的增加而增大,且随腐蚀时间的延长而有所下降;采用电偶腐蚀电位、电化学阻抗谱(EIS)和动态极化等测量方法研究了镀层破损双相耦合电极的腐蚀电化学特性,所得结果基本一致。

关键词 汽车钢板镀锌层破损腐蚀    
Abstract

Research on the corrosion properties of the specimens of auto galvanized steel sheet with various broken areas of the zinc coating prepared by dissolution with a dilute hydrochloric acid solution were carried out in 5 %NaCl solution in the present paper. The results show that in the initial period of time the corrosion mass-losses of the specimens with coating were higher than that of the specimen without coating, the loss of coating made the major part of contribution to the corrosion weigh-loss of specimen. The corrosion rates increased with the broken area of the coating and decreased with exposing time. In addition, the electrochemical characteristics of the duplex phase galvanic electrodes were studied by galvanic corrosion potential measuring, electrochemical impedance spectrum (EIS) and potentiodynamic polarization and compared with the corrosion results.

Key wordsauto steel sheet    zinc coating    breakage    corrosion
    
ZTFLH: 

TG172

 
基金资助:

国家自然科学基金项目(No.50571022),国家科技基础条件平台建设资助项目(No.2005DKA10400)

通讯作者: 张红     E-mail: hongzhang0523@163.com
Corresponding author: hongzhang     E-mail: hongzhang0523@163.com
作者简介: 张红,女,1966生,博士生,研究方向为腐蚀与防护

引用本文:

张红 杜翠薇 李晓刚 齐慧滨. 镀锌层破损汽车钢板的腐蚀行为研究[J]. 中国腐蚀与防护学报, 2009, 29(3): 172-176.

链接本文:

https://www.jcscp.org/CN/Y2009/V29/I3/172

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