土霉素在含氯离子的醋酸介质中对冷轧钢的缓蚀作用
Corrosion Inhibition of Oxytetracycline for Cold Rolled Steel in HAc Solution in Presence of Cl-
摘 要
采用失重法、电导率测试、电化学方法研究了过期药土霉素在含氯离子的20%醋酸溶液中对冷轧钢的缓蚀作用。结果表明，土霉素在含氯离子的20%醋酸溶液中对冷轧钢有较好的缓蚀效果，且缓蚀率随着缓蚀剂浓度的增加而增大。当土霉素质量浓度为7.0 g·L-1时，缓蚀率达到88.6%，该缓蚀剂是一种混合型缓蚀剂; 且在冷轧钢表面的吸附符合Langmuir吸附等温式，其吸附是物理和化学吸附过程。
冷轧钢
土霉素
氯离子
acetic acid
cold rolled steel (CRS)
oxytetracycline(OTC)
Cl-
Abstract
The corrosion inhibition of expired drugs oxytetracycline (OTC) for cold rolled steel (CRS) in 20% HAc solution in the presences of Cl- was investigated by mass loss, conductivity measurement and electrochemical methods. The results showed that OTC was a good inhibitor for cold rolled steel in 20% HAc solution in the presence of Cl-, and the inhibition efficiency increased with the increase of the inhibitor concentration, and the inhibition efficiency was up to 88.6% at the concentration of 7.0 g·L-1. It is a mixed-type inhibitor. The adsorption of inhibitors on the CRS surface is spontaneous physisorption and chemisorption, also obeys the Langmuir adsorption isotherm equation.
中图分类号 TG174.42
所属栏目 试验研究
基金项目 国家自然科学基金(51161025); 云南省自然科学基金(2011FZ173); 云南省绿色化学与功能材料研究省创新团队(2011HC008); 云南省教学改革项目(201327); 云南省高校绿色新能源与材料科技创新团队(2011UY09); 云南民族大学化生学院SRT创新性实验项目(2013HXSRT19)
收稿日期 2013/12/24
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备注白玮(1974-)，教授，硕士，从事金属材料腐蚀与防护研究，
引用该论文: YU Jin-miao,YANG Yan,SHI Yin-hao,BAI Wei,YE Yan-qing,LI Qiu-yun,ZHONG Jia-cai. Corrosion Inhibition of Oxytetracycline for Cold Rolled Steel in HAc Solution in Presence of Cl-[J]. Corrosion & Protection, 2014, 35(11): 1083
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参考文献
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【2】SING M M,GUPTA A. Corrosion behavior of mild steel acetic acid solution[J]. Corrosion Science,2000,56(4):371-379.
【3】KHALED K F. The inhibition of benzimidazole derivatives on corrosion of iron in 1M HCl solutions[J]. Electrochim Acta,2003,48(17):2493-2503.
【4】李时银,李小荣,朱怡苹,等. 土霉素在乙酸水溶液中的臭氧氧化降解研究[J]. 环境科学,2012,33(12):4335-4339.
【5】MIGAHED M A,AZZAM E M S,Al-SABAGH A M. Corrosion inhibition of mild steel in 1 M sulfuric acid solution using anionic surfactant[J]. Materials Chemistry and Physics,2004,85(3):273-279.
【6】MU G N,ZHAO T P,LIU M,et al. Effect of metallic cations on corrosion inhibition of an anionic surfactant for mild steel[J]. Corrosion Scienc,1996,52(11):853-856.
【7】EIKADI L,MERNARI B,TRAISNEL M,et al. The inhibition action of 3,6-bis(2-methoxyphenyl)-1,2-dihydro-1,2,4,5-Tetrazine on the corrosion of mild steel in acidic media[J]. Corrosion Science,2000,42(4):703-719.
【8】木冠南,刘光恒,张瑾. 磷酸溶液中DDA在锌表面的吸附及其缓蚀作用[J]. 物理化学学报,2002,18(11):1023-1028.
【9】TANG Y M,YANG X Y,YANG W Z,et al. A preliminary investigation of corrosion inhibition of mild steel in 0.5M H2SO4 by 2-amino-5-(n-pyridyl)-1,3,4-thiadiazole:Polarization,EIS and molecular dynamics simulations[J]. Corrosion Science,2010,52(5):1801-1808.
【10】周志辉,李正奉. 低电导率体系中铜的腐蚀规律及缓蚀剂的应用[J]. 华东电力,2004,32(6):59-62.
【11】刘卉,吴振玉,姜霞,等. 金属缓蚀剂协同作用的研究进展[J]. 安徽化工,2012,38(2):1-5.
【12】杜海燕,路民旭,吴荫顺,等. 脂肪酰胺类缓蚀剂对X65钢抗CO2腐蚀的机理研究[J]. 金属学报,2006,42(5):533-536.
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