The Inhibited effect of Phenolphthalein towards the corrosion of C38 Steel in Hydrochloric Acid

被引：0
|
作者：
Ben Hmamou, D.
Salghi, R.
Zarrouk, A. [1 ]
Zarrok, H. [2 ]
Al-Deyab, S. S. [3 ]
Benali, O.
Hammouti, B. [1 ,3 ]
机构：
[1] Univ Mohammed Premier, Fac Sci, LCAE URAC18, Oujda, Morocco
[2] Fac Sci, Lab Proc Separat, Kenitra, Morocco
[3] King Saud Univ, Coll Sci, Dept Chem, Petrochem Res Chair, Riaydh 11451, Saudi Arabia
来源：
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2012年 / 7卷 / 09期
关键词：
C38; steel; Phenolphthalein (Ph); Hydrochloric acid; Adsorption; MILD-STEEL; QUINOXALINE DERIVATIVES; CARBON-STEEL; COPPER; ADSORPTION; IRON; SURFACTANTS; EFFICIENCY; ELECTRODE; ALLOY;
D O I：
暂无
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The inhibition of the corrosion of carbon steel in 1 M HCl by Phenolphthalein (Ph) has been investigated in relation to the concentration of the inhibitor as well as the temperature using weight loss and electrochemical measurements. The effect of the temperature on the corrosion behaviour with addition of optimal concentration of Ph was studied in the temperature range 298-323K. Polarisation curves reveal that Ph is a mixed type inhibitor. The value of inhibition efficiency decreases slightly with the increase in the temperature. Changes in impedance parameters (charge transfer resistance, R-t, and double layer capacitance, C-dl) were indicative of adsorption of Ph on the metal surface, leading to the formation of a protective film. Adsorption of Ph on the C38 steel surface is found to obey the Langmuir adsorption isotherm. Some thermodynamic functions of dissolution and adsorption processes were also determined.
引用
收藏
页码：8988 / 9003
页数：16
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