摘要
在1Cr13Mo3钢的基础上设计了两种不同成分的合金钢(S1合金钢中添加了0.3%Sn、0.3%Sb和0.4%Cu,S2合金钢中添加了0.6%Sn、0.4%Cu),通过真空悬浮炉熔炼得到铸态合金钢,研究了室温(20℃左右)条件下两种合金在1%、3%和5%三种浓度盐酸溶液中的腐蚀行为,并对两种材料在三种盐酸溶液中的腐蚀性能和腐蚀机理进行研究。结果表明,合金钢S1耐蚀性强于合金钢S2,室温下,随着盐酸溶液浓度增加,铸态合金钢S1、S2的腐蚀电位均正向移动,极化曲线出现钝化区并变窄,极化电阻变小,自腐蚀电流密度增加,腐蚀速率加快;1Cr13Mo3钢中Sn、Sb、Cu的加入相比Sn、Cu的加入更能提高材料在盐酸溶液中的耐腐蚀性能。
Two different alloy alloys were designed based on 1Cr13Mo3 steel,0.3%Sn,0.3%Sb and 0.4%Cu S1 alloy steel were added in 0.6%Sn,0.4%Cu S2 alloy steel.The casting alloy steels were obtained by smelting in a vacuum suspension furnace.The corrosion behaviors of the two alloys in 1%,3%and 5%hydrochloric acid solutions at room temperature(about 20℃)were studied,thus the corrosion performance and corrosion mechanism were analyzed.The results show that the corrosion resistance of alloy steel S1 is stronger than that of alloy steel S2 at room temperature.With the concentration of hydrochloric acid solution increases,the corrosion potentials of S1 and S2 move in the positive direction,and the passivation zone appears and becomes narrow,the polarization resistance becomes smaller,the self-corrosion current density increases,and the corrosion rate increases.The addition of Sn,Sb and Cu in 1Cr13Mo3 steel can improve the corrosion resistance of the material in hydrochloric acid solution compared with the addition of Sn and Cu.
作者
叶鹏程
姜锋
汪冰峰
杨刚毅
YE Pengcheng;JIANG Feng;WANG Bingfeng;YANG Gangyi(School of Materials Science and Engineering,Central South University,Changsha 410083,Hunan,China;Light High Strength Structural Materials Laboratory,Changsha 410083,China)
出处
《热加工工艺》
北大核心
2020年第12期36-39,共4页
Hot Working Technology
基金
湖南省创新创业技术投资项目(2017GK5051)。
关键词
腐蚀
稀盐酸
失重
极化曲线
corrosion
dilute hydrochloric acid
wear mass loss
polarization curve
