碳钢和耐候钢在盐雾环境下的腐蚀行为研究  

Study on Corrosion Behavior of Carbon Steel and Weathering Steel in Salt Spray Test

作　　者：张琳[1,2] 王振尧[1] 赵春英[2] 曹公望 刘艳洁[1] 

机构地区：[1]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 [2]沈阳理工大学环境与化学工程学院,沈阳110159

出　　处：《装备环境工程》2014年第1期1-6,共6页Equipment Environmental Engineering

基　　金：国防技术基础项目(H102011B002);国家电网科技项目(KG12K16004;5211DS110493)~~

摘　　要：目的研究Q235钢和耐候钢在3.5%(质量分数)NaCl盐雾/干燥循环加速腐蚀试验中的腐蚀过程,比较它们的耐腐蚀性。方法采用腐蚀失重分析、X-射线衍射分析、扫描电镜观测和电化学测试等进行研究。结果 Q235钢和耐候钢的锈层没有明显的保护作用,但耐候钢的耐蚀性略优于Q235钢。结论在模拟海洋大气环境中,该耐候钢没有优越性,说明该耐候钢不适用于海洋大气环境中。Objective To study the corrosion process of Q235 steel and weathering steel in 3.5% NaCl cyclic salt spray/dry accelerated corrosion experiment and to compare their corrosion resistance. Methods Weight-loss method, XRD,SEM and electrochemical test. Results The rust layer of Q235 steel and weathering steel had no significant protective effect,but the weather resistance of weathering steel was slightly better than that of Q235 steel. Conclusion In simulated Marine atmospheric environment,the weathering steel had no superiority. The weathering steel is not applicable to marine atmospheric environment.

关 键 词：钢 大气腐蚀 锈层 加速腐蚀试验 

分 类 号：TG172.3[金属学及工艺—金属表面处理]