The samples of JT245 economical weathering steel exposed to atmosphere for one year in Beijing,Qingdao and Shenyang were studied with electrochemical and electronprobe microanalyzer.

• 作者单位：北京航空航天大学材料科学与工程学院;钢铁研究总院表面技术与腐蚀工程研究室;济南钢铁集团技术中心;