摘要
用失重法研究了4种金属离子(Na+,Zn2+,Cu2+,Fe3+)在0.5 mol/L H2SO4以及500 mg/L没食子酸+0.5 mol/L H2SO4介质中在20℃对冷轧钢腐蚀行为的影响.结果表明:Cu2+对钢的腐蚀起抑制作用;而其余3种金属离子(Na+,Zn2+,Fe3+)对钢的腐蚀起加速作用.在相同条件下,冷轧钢在0.5 mol/L H2SO4溶液中的腐蚀速率顺序为:Cu2+<Zn2+<Na+<Fe3+;而在500 mg/L没食子酸+0.5 mol/L H2SO4介质中,腐蚀速率顺序为:Cu2+<Zn2+<Fe3+<Na+.
The corrosion behavior effect of metallic cations （ Na^＋ , Zn^2 ＋ , Cu^2 ＋ , Fe^3 ＋ ） in H2SO4/gallic acid solution at 20 ℃ on the cold rolled steel was studied by weight loss method. The results showed that Cu^2 ＋ inhibit the corrosion of cold rolled steel, whereas the other metallic cations accelerate the steel corrosion. In 0.5 mol/L H2SO4 solution, the corrosion rate of cold rolled steel follows the order： Cu^2＋ 〈 Zn^2＋ 〈 Fe^3＋ 〈Na^＋ . In 500 mg/L gallic acid ＋ 0.5 mol/L H2 SO4 solution, the corrosion rate of cold rolled steel follows the order： Cu^2＋ 〈 Zn^2＋ 〈 Na^＋ 〈 Fe^3＋ . The corrosion behavior was also discussed.
出处
《云南大学学报（自然科学版）》
CAS
CSCD
北大核心
2007年第5期507-510,共4页
Journal of Yunnan University(Natural Sciences Edition)
基金
国家自然科学基金资助项目(50261004)
云南省教育厅基金资助项目(06Y073A)
关键词
钢
没食子酸
金属离子
腐蚀
steel
gallic acid
metallic cations
corrosion
