期刊论文

中文

表面技术

1001-3660

2015

44

10

93-98

10.16490/j.cnki.issn.1001-3660.2015.10.016

湖北省教育厅基金资助项目（Q20131703） 湖北省自然科学基金资助项目（2014CFB890） 大学生创新训练项目（CXXL2014008）

本校为第一机构

目的提高0.5 mol/L HCl中植酸对热轧碳钢（HRCS）的缓蚀性能。方法用失重法和电化学阻抗法测试植酸、吐温-40以及复配缓蚀剂的缓蚀效率,从热力学和动力学方面分析复配缓蚀剂的作用机制。结果失重法测试表明,植酸和吐温均对热轧碳钢有一定缓蚀作用。当293 K,植酸质量浓度为0.3g/L时,缓蚀效率达到69.1%,在质量浓度为0.8 g/L时缓蚀效率下降为9.6%;吐温-40的缓蚀效率随着质量浓度的增大而增大,0.8 g/L时达到73.4%。在0.5 mol/L盐酸中加入0.05 g/L吐温-40后,复配缓蚀剂的缓蚀效率随着质量浓度的增加而增大,且优于植酸和吐温-40单独使用,表现出协同效应。电化学测试得到了相同的结论,表明复配缓蚀剂在...

Objective To improve the corrosion inhibition performance of phytic acid for hot rolled carbon steel (HRCS) in 0. 5 mol/L HCl soltuion. Methods The corrosion inhibition efficiency of phytic acid, Tween-40, and their compound on carbon steel was measured by weight-loss method and electrochemical impedance spectrometry tests. The inhibition mechanism of the compound inhibitor was analyzed using thermodynamics and kinetics. Results It was revealed by weight-loss measurement that either phytic acid or tween-40 alone had limited inhibitory effect on the corrosion of HRCS in hydrochloric acid. The i...