Research on the Atmospheric Corrosion Mechanism of Weathering Steel
- 作者：ZHANG Quan-cheng
- 会议时间：2004-05-27
- 关键词：耐候钢 ; 离子选择性 ; 大气腐蚀 ; 腐蚀机理
- 作者单位：Baosteel Cold Rolling Mill
- 母体文献：首届宝钢学术年会论文集
- 会议名称：首届宝钢学术年会
- 会议地点：上海
- 主办单位：宝钢集团有限公司
- 语种：chi
摘要
In this paper,the compactness and the phase composition of the protective rust layer on the surface of weathering steel were observed and tested using optical microscope, EPMA and XRD. The distribution of the internal stress in the rust layer was analyzed by finite element simulation, and the ion selective performance of the rust layer was measured by synthesizing the corrosion products in the laboratory . Results show that the protective rust layer on weathering steel, accelerated by alloying element enrichment and rust/steel interface flattening, was equipped with cation selective performance, such rust layer could depress the penetration of corrosive anion and then decrease the corrosion rate.