大蒜提取液在硫酸介质中对碳钢缓蚀作用的电化学研究
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- 英文论文题名：Electrochemical Study of the Inhibitive Effect of Garlic Extractive on the Corrosion of Carbon Steel in H_2SO_4 Solution
- 论文作者：郑兴文 ; 龚敏 ; 张豫 ; 曾祥梅 ; 姜春梅
- 英文论文作者：ZHENG Xing-wen ; GONG Min ; ZHANG Yu ; ZENG Xing-mei ; JIANG Chun-mei ; Dept. of Chemistry ; Sichuan University of Science & Engineering ; Material and Chemical Engineering Dept ; Sichuan University of Science & Engineering
- 年：2010
- 作者机构：四川理工学院化学系;四川理工学院材料与化学工程系;
- 论文关键词：大蒜 ; 硫酸 ; 碳钢 ; 缓蚀剂
- 英文论文关键词：garlic ; sulfuric acid ; carbon steel ; corrosion inhibiter
- 会议召开时间：2010-07-28
- 会议录名称：第十六届全国缓蚀剂学术讨论会论文集
- 语种：中文
- 分类号：TG174.42
- 学会代码：ZGHA
- 会议名称：第十六届全国缓蚀剂学术讨论及应用技术经验交流会
- 会议地点：中国上海
- 主办单位：中国腐蚀与防护学会缓蚀剂专业委员会
- 学会名称：中国腐蚀与防护学会缓蚀剂专业委员会
- 页数：5
- 文件大小：891k
- 原文格式：O
- 会议级别：全国
摘要
应用动电位扫描法和电化学阻抗法研究了大蒜提取液对碳钢在10%H_2SO_4中缓蚀作用。结果表明,大蒜提取液对碳钢在10%H_2SO_4中具有良好的缓蚀性能,随提取液浓度的增加,缓蚀效率增大。大蒜提取液为混合抑制型缓蚀剂,作用机理为几何覆盖效应。大蒜提取液的有效缓蚀成分在碳钢表面的吸附过程为吸热过程,吸附行为服从El-Awady动力学模型与Flory-Huggins吸附等温方程。
The effect of the garlic extractive on the corrosion of carbon steel in 10%H_2SO_4 solution was investigated by using polarization curves measurement and electrochemical impedance spectroscopy(EIS).The results showed that the garlic extractive had good corrosion inhibition for carbon steel in 10%H_2SO_4 solution,and the inhibition efficiency increased with increasing concentration of garlic extractive concentration.The garlic extractive was a mixedcontrol inhibitor and its mechanism was coverage effects.The adsorption processes of garlic extractive on carbon steel surface were endothermic reaction,and the adsorption was in accordance with El-Awady dynamic model and FloryHuggins adsorption isotherm equation.
The effect of the garlic extractive on the corrosion of carbon steel in 10%H_2SO_4 solution was investigated by using polarization curves measurement and electrochemical impedance spectroscopy(EIS).The results showed that the garlic extractive had good corrosion inhibition for carbon steel in 10%H_2SO_4 solution,and the inhibition efficiency increased with increasing concentration of garlic extractive concentration.The garlic extractive was a mixedcontrol inhibitor and its mechanism was coverage effects.The adsorption processes of garlic extractive on carbon steel surface were endothermic reaction,and the adsorption was in accordance with El-Awady dynamic model and FloryHuggins adsorption isotherm equation.
引文
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[16]Ateya B G.The adsorption of thiourea on mild steel[J].Corrosion Science,1984,24:509-515.
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[2]Jovancicevic V,Ramachandran S,Prince P.Inhibition of carbon dioxide corrosion of mild steel by imidazolines and their precursors[J].Corrosion,1999,55:449-455.
[3]曾宪光,龚敏,李新跃,等.一种环保植物型酸洗缓蚀剂的研究[J].四川理工学院学报,2009,22(4):117-119.
[4]王慧龙,郑家燊.环境友好缓蚀剂的研究进展[J].腐蚀科学与防护技术,2002,14(5):275-279.
[5]郑兴文,龚敏,曾宪光,等.天然绿色盐酸酸洗缓蚀剂研究进展[J].四川理工学院学报,2008,21(4):68-71
[6]郑兴文,龚敏,邹振,等.竹叶提取液的制备及其缓蚀性能[J].材料保护,2010,43(2):21-23.
[7]汤兵,陈欣义.酸洗过程中的缓蚀剂[J].清洗世界,2006,22(2):22-28.
[8]曹楚南.腐蚀电化学原理[M].(第三版)北京:化学工业出版社,2008:195-215.
[9]刘志胜,杨方琪.大蒜及大蒜精油的化学成分[J].中国食品学报,1999,3(1):1-5.
[10]许春萱,魏金风,魏红光.大蒜精油提取后废弃蒜渣综合利用的研究[J].环境科学与技术,2001,6:42-44.
[11]刘峥,林原斌,高炅杨.植物型缓蚀剂提取及灰色系统对其效果评价[J].腐蚀科学与防护技术,2007,19(2):137-140.
[12]吴伟明,程明焱,杜海燕,等.油茶粕缓蚀剂的研制及其缓蚀性能评价[J].腐蚀与防护,2007,28(10):509-511.
[13]El-Awady A A,Abd-El-Nabey B A,Aziz S G.Kinetic-thermodynamic and adsorption isotherms analyses for the inhibition of the acid corrosion of steel by cyclic and open-chain amines[J].J Electrochem Soc,1992,19(8):2149-2154.
[14]Abdel-Gaber A M,Abd-El-Nabey B A,Saadawy M.The role of acid anion on the inhibition of the acidic corrosion of steel by lupine extract[J].Corrosion Science,2009,51(5):1038-1042.
[15]Fuchs-Godec R.Inhibitory effect of non-ionic surfactants of the TRITON-X series on the corrosion of carbon steel in sulphuric acid[J].Electrochimica Acta,2007,52(15):4974-4981.
[16]Ateya B G.The adsorption of thiourea on mild steel[J].Corrosion Science,1984,24:509-515.
[17]刘晓轩,李向红,木冠南.氨基酸类有机物在硫酸介质中对钢的缓蚀作用[J].云南大学学报,2003,25(4):355-357.
[18]Sathiyanarayanan S,Jeyaprabha C,Venkatachari G.Influence of metal cations on the inhibitive effect of polyaniline for iron in 0.5 M H_2SO_4[J].Materials Chemistry and Physics,2008,107:350-355.