期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

2003

29

3

265-267

10.3321/j.issn:1007-1032.2003.03.024

湖南省自然科学基金资助项目（011050020-144）；

本校为第一机构

为了探明硫脲在柠檬酸中对碳钢的缓蚀行为,采用极化曲线法研究了柠檬酸溶液中45#碳钢的腐蚀行为以及硫脲与氯离子对碳钢的协同缓蚀作用.结果表明:在26.8～41.8 ℃内,45#碳钢的腐蚀过程为阴极析氢控制;适量浓度的硫脲(0.3%)与氯离子复配之后对碳钢的缓蚀效果显著,且缓蚀率随着氯离子浓度(0～1.2 mol/L)的升高而增大;氯离子浓度为0.08 mol/L时,缓蚀率达到最大值(72.9%),此后随着氯离子浓度的进一步升高,缓蚀率呈下降的趋势.

This paper is an attempt to probe into the corrosion behavior of 45# carbon steel in citric acid solution and the synergic inhibition of thiourea and chloride to carbon steel by means of polarization curve. The results show that the corrosion process of 45# carbon steel is controlled by the cathodic hydrogenevolution at the experimental temperature. Mixing thiourea in appropriate concentrations with chloride causes effective inhibition to carbon steel. The inhibition efficiency increases with the concentration of chloride. After reaching ...