热轧钢板表面氧化层对基体耐蚀性的影响  

Effect of Surface Oxide Layer on Corrosion Resistance of Hot-Rolled Steel Sheet

作　　者：战波[1] 黄哲瑞 钟庆东[2] 

机构地区：[1]宝山钢铁股份有限公司,上海201900 [2]省部共建高品质特殊钢冶金与制备国家重点实验室,上海市钢铁冶金新技术开发应用重点实验室,上海大学材料科学与工程学院,上海200072

出　　处：《腐蚀与防护》2018年第3期194-197,201,共5页Corrosion & Protection

基　　金：南通市产学研协同创新计划项目(BC2014010);上海市钢铁冶金新技术开发应用重点实验室开放课题(SELF-2015-01)

摘　　要：通过扫描电子显微镜(SEM)对热轧钢板表面氧化层形貌进行了表征,利用电化学阻抗谱(EIS)、动电位扫描法研究了热轧钢板表面氧化层对基体腐蚀行为的影响。结果表明:热轧钢板表面氧化层能够提高基体的耐蚀性,在短期浸泡腐蚀过程中,氧化层仅起到物理屏蔽的作用,不影响阴极、阳极反应以及腐蚀机理。The morphology of oxide layer on the surface of hot-rolled steel sheet was characterized by scanning electron microscopy （SEM）. The effect of oxide layer on the corrosion behavior of hot-rolled steel sheet was studied by electrochemical impedance spectroscopy （EIS） and potentiodynamic scanning testing. The results showed that the surface oxide layer of hot-rolled steel sheet could improve the corrosion resistance of the substrate, during short-term immersion eorrosion process, the oxide layer did not affect the cathodic and anodic reactions and corrosion mechanism and only played the role of physical shielding in the process of corrosion.

关 键 词：热轧钢板 氧化层 电化学阻抗谱 极化曲线 腐蚀 

分 类 号：TG174[金属学及工艺—金属表面处理]