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材料研究学报  2009, Vol. 23 Issue (4): 343-346    
  研究论文 本期目录 | 过刊浏览 |
热镀锌钢材的电偶腐蚀行为--划痕型缺陷
张大磊1; 王伟3; 李焰1
1.中国科学院海洋研究所 青岛 266071
2.中国科学院研究生院 北京 100039
3.中国海洋大学化学化工学院 青岛 266100
Wire beam electrode technique for investigating galvanic corrosion behavior of hot--dip galvanized steel--scratch defect
ZHANG Dalei 1;  WANG Wei 3;   LI Yan 1
1.Institute of Oceanology; Chinese Academy of Sciences; Qingdao 266071
2.Graduate School of the Chinese Academy of Sciences; Beijing 100039
3.College of Chemistry and Chemical Engineering; Ocean University of China; Qingdao 266100
引用本文:

张大磊 王伟 李焰. 热镀锌钢材的电偶腐蚀行为--划痕型缺陷[J]. 材料研究学报, 2009, 23(4): 343-346.
, , . Wire beam electrode technique for investigating galvanic corrosion behavior of hot--dip galvanized steel--scratch defect[J]. Chin J Mater Res, 2009, 23(4): 343-346.

全文: PDF(891 KB)  
摘要: 

使用锌--碳钢异材质丝束电极技术, 模拟并研究了锌/钢电偶腐蚀不同阶段的电位和电流密度的空间分布. 结果表明, 在锌丝与钢丝面积比为10 : 1的情况下, 锌丝能给钢丝提供足够的阴极保护, 且锌丝之间存在明显的电位、电流分布不均现象; 钢丝之间也存在电化学参数分布不均现象, 而且在受到保护的同时钢丝表面有氢析出.

关键词 材料失效与保护丝束电极电偶腐蚀阴极保护镀锌层氢析出    
Abstract

In order to obtain the spatial distribution and its variation with time during the galvanic corrosion of hot dip galvanized steel if scratches occurred in the zinc coating, the heterogeneous wire beam electrode composed of zinc and mild steel wires was developed, and then the potential and current distributions of this electrode were acquired at different time. The results showed that zinc wires can provide enough cathodic protection to steel wires in seawater when surface area of zinc wires is ten times that of steel wires. The potential and current distributions were inhomogeneous among the zinc wires. The similar heterogeneous phenomenon also presented among the steel wires, and the hydrogen evolution occurred on their surfaces.

Key wordsmaterials failure and protection    wire beam electrode    carbon steel    cathodic protection    zinc coating    hydrogen evolution
收稿日期: 2009-01-09     
ZTFLH: 

TB304

 
基金资助:

国家自然科学基金40576038、山东省博士基金2006BS07008和山东省自然科学基金Y2008E09资助项目.

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