Comprehensive study of the behavior of copper inhibition in 1 M HNO3 by Euphorbia Helioscopia linn. extract as green inhibitor

被引：17
作者：
Abdallah, Y. M. [1 ]
Shalabi, K. [2 ]
机构：
[1] Delta Univ Sci & Technol, Fac Oral & Dent Med, Dental Biomat Dept, Gamasa, Egypt
[2] El Mansoura Univ, Fac Sci, Dept Chem, Mansoura 35516, Egypt
来源：
PROTECTION OF METALS AND PHYSICAL CHEMISTRY OF SURFACES | 2015年 / 51卷 / 02期
关键词：
ELECTROCHEMICAL FREQUENCY-MODULATION; COLD-ROLLED STEEL; CORROSION INHIBITION; MILD-STEEL; ACID; ADSORPTION; IRON; MECHANISM; ALUMINUM; MEDIA;
D O I：
10.1134/S2070205115020021
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The inhibitive effect of the Euphorbia Helioscopia linn. extract (EHE) on the corrosion of copper in 1 M HNO3 has been evaluated by means of potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and electrochemical frequency modulation (EFM) techniques. The calculated adsorption thermodynamic parameters indicated that the adsorption was a spontaneous, exothermic process accompanied by an increase in entropy. The inhibition efficiency increases with increasing the concentration of the inhibitor in the medium and decrease with increasing the temperature. The maximum inhibition approached to 91% in the presence of 500 ppm EHE using Tafel polarization technique. The results show that EHE is an effective corrosion inhibitor for protecting the corrosion of copper in 1 M HNO3 medium even at stimulated conditions.
引用
收藏
页码：275 / 284
页数：10
相关论文
共 54 条
[1]  
Abd-El-Nabey B.A., 2013, J ELECTROCHEM SCI, V8, P5851
[2]   Electrochemical frequency modulation as a new technique for monitoring corrosion inhibition of iron in acid media by new thiourea derivative [J].
Abdel-Rehim, SS ;
Khaled, KF ;
Abd-Elshafi, NS .
ELECTROCHIMICA ACTA, 2006, 51 (16) :3269-3277
[3]   THE CORROSION OF COPPER PIPES IN HIGH CHLORIDE LOW CARBONATE MAINS WATER [J].
ADELOJU, SB ;
HUGHES, HC .
CORROSION SCIENCE, 1986, 26 (10) :851-870
[4]   ADSORPTION OF MONOMERIC AND POLYMERIC AMINO CORROSION INHIBITORS ON STEEL [J].
ANNAND, RR ;
HURD, RM ;
HACKERMAN, N .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1965, 112 (2P1) :138-+
[5]   INHIBITION MECHANISM OF MEDIUM-SIZED POLYMETHYLENEIMINE [J].
ARAMAKI, K ;
HACKERMAN, N .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1969, 116 (05) :568-+
[6]  
Assaf FH, 2007, INT J ELECTROCHEM SC, V2, P169
[7]  
ATEYA BG, 1984, CORROS SCI, V24, P509, DOI 10.1016/0010-938X(84)90033-7
[8]  
Atkins P., 1999, PHYS CHEM, Vsixth
[9]   Some amino acids as corrosion inhibitors for copper in nitric acid solution [J].
Barouni, K. ;
Bazzi, L. ;
Salghi, R. ;
Mihit, M. ;
Hammouti, B. ;
Albourine, A. ;
El Issami, S. .
MATERIALS LETTERS, 2008, 62 (19) :3325-3327
[10]   Inhibition Effect of Nevirapine an Antiretroviral on the Corrosion of Mild Steel Under Acidic Condition [J].
Bhat, J. Ishwara ;
Alva, Vijaya D. P. .
JOURNAL OF THE KOREAN CHEMICAL SOCIETY-DAEHAN HWAHAK HOE JEE, 2011, 55 (05) :835-841
123456