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
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。
氧化层
电化学阻抗谱
极化曲线
腐蚀
hot rolled steel
oxide layer
electrochemical impedance spectroscopy
polarization curve
corrosion
Abstract
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 corrosion 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.
中图分类号 TG174 DOI 10.11973/fsyfh-201803006
所属栏目 试验研究
基金项目 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）
收稿日期 2016/11/16
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引用该论文: ZHAN Bo,HUANG Zherui,ZHONG Qingdong. Effect of Surface Oxide Layer on Corrosion Resistance of Hot-Rolled Steel Sheet[J]. Corrosion & Protection, 2018, 39(3): 194
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【4】徐科,杨朝霖,周鹏. 热轧带钢表面缺陷在线检测的方法与工业应用[J]. 机械工程学报,2009,45(4):111-114.
【5】吴祝民. 热轧带钢氧化层的成因及对策[J]. 轧钢,2007,24(3):56-58.
【6】张清东,黄纶伟,吴彬,等. 热轧带钢表面氧化层实测分析[J]. 上海金属,2000,22(5):32-34.
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【11】WALLINDER D,PAN J,LEYGRSF C,et al. EIS and XPS study of surface modification of 316L stainless steel after passivation[J]. Corrosion Science,1999,41:275-289.
【12】YANG Q,LUO J L. The hydrogen-enhanced effects of chloride ions on the passivity of type 304 stainless steel[J]. Electrochim Acta,2000,45:3927-3937.
【13】SCHUTZE M. An approach to a global model of the mechanical behaviour of oxide scales[J]. Mater High Temp,1994,12:237-247.
【14】TILEY J,ZHANG Y,LENARD J G. Hot compression testing of mild steel industrial reheat furnace scale[J]. Steel Res,1999,70:437-440.
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