东北大学学报:自然科学版 ›› 2014, Vol. 35 ›› Issue (11): 1548-1550.DOI: 10.12068/j.issn.1005-3026.2014.11.007

• 材料与冶金 • 上一篇    下一篇

盐酸浓度对热轧不锈钢酸洗板表面质量的影响

李晓亮,史培阳,岳莹莹,姜茂发   

  1. (东北大学 多金属共生矿生态化冶金教育部重点实验室, 辽宁 沈阳110819)
  • 收稿日期:2013-11-25 修回日期:2013-11-25 出版日期:2014-11-15 发布日期:2014-07-03
  • 通讯作者: 李晓亮
  • 作者简介:李晓亮(1984-),男,山东栖霞人,东北大学博士研究生;姜茂发(1955-),男,山东栖霞人,东北大学教授,博士生导师.
  • 基金资助:
    中央高校基本科研业务费专项资金资助项目(N110602001).

Effect of Hydrochloric Acid on the Surface Integrity of HotRolled Stainless Steel Sheets During Pickling Process

LI Xiaoliang, SHI Peiyang, YUE Yingying, JIANG Maofa   

  1. Key Laboratory for Ecological Metallurgy of Multimetallic Ores, Ministry of Education, Northeastern University, Shenyang 110819, China.
  • Received:2013-11-25 Revised:2013-11-25 Online:2014-11-15 Published:2014-07-03
  • Contact: LI Xiaoliang
  • About author:-
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摘要: 借助电化学方法、激光共聚焦显微镜和SEM等分析手段,研究了盐酸浓度对热轧铁素体不锈钢表面质量的影响作用.结果表明:在本实验条件下,随着盐酸浓度的增加,酸洗后不锈钢表面平整程度增加,但盐酸浓度过高存在较严重的晶间腐蚀现象.虽然酸洗后不锈钢的阴阳极极化曲线形状在弱极化区并没有发生太大的变化,但随着盐酸浓度的增加,不锈钢在溶液中的点蚀电位升高,并且容抗弧半径增大,表面耐蚀性增强.

关键词: 铁素体不锈钢, 盐酸浓度, 酸洗, 极化曲线, 阻抗图谱

Abstract: Electrochemical method, laser scanning confocal microscopy (LSCM) and scanning electron microscope(SEM) were employed to investigate the effect of the hydrochloric acid on the surface integrity of hotrolled ferritic stainless steel during pickling process. The results showed that with the increase of concentration of hydrochloric acid, the surface becomes smoother. However, high concentration results in severe intergranular corrosion. With the increase of hydrochloric acid content, the shapes of polarization curves in weak polarization area do not change obviously, but the pitting potential and the radiuses of capacitive loop increase, indicating that the corrosion resistance enhances.

Key words: ferritic stainless steel, hydrochloric acid content, pickling, polarization curve, EIS(electrochemical impedence spectrum)

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