Kinetic investigation of C38 steel corrosion in concentrated perchloric acid solutions

被引：10

作者：

Benabdellah, M. ^{[2
]}

Khaled, K. F. ^{[1
,3
]}

Hammouti, B. ^{[2
]}

机构：

[1] Ain Shams Univ, Fac Educ, Dept Chem, Electrochem Res Lab, Roxy Cairo, Egypt

[2] Univ Mohammed Premier, Fac Sci, Lab Chim Appl & Environm, Oujda 60000, Morocco

[3] Taif Univ, Fac Sci, Dept Chem, Mat & Corros Lab, Hawiya 888, Saudi Arabia

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2010年 / 120卷 / 01期

关键词：

Steel; Perchloric acid; Corrosion; Thermodynamic activation characterisation; Acidity functions; COLD-ROLLED STEEL; PHOSPHORIC-ACID; HYDROCHLORIC-ACID; MILD-STEEL; SYNERGISTIC INHIBITION; MEDIA; REALIZATION; 2-MERCAPTOBENZIMIDAZOLE; LEVEL; IRON;

D O I：

10.1016/j.matchemphys.2009.10.021

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The corrosion behaviour of steel at various concentrations of perchloric acid was studied by weight loss method in temperature range from 298 to 323 K. Results obtained show that corrosiveness of acid increases with its concentration and temperature. The logarithm of corrosion rate was plotted against the acid concentration and values of Hammett H-0 and Strehlow R-0(H) acidity functions. The activation energies, enthalpies and entropies of the corrosion process of steel were also determined and fitted against R-0(H). (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：61 / 64

页数：4

共 29 条

[1]

ABED Y, 2000, B ELECTROCHEM, V16, P289

[2]

[Anonymous], Z PHYS CHEM MUENCHEN

[3] Corrosion behaviour of steel in concentrated phosphoric acid solutions [J].

Benabdellah, M ;

Hammouti, B .

APPLIED SURFACE SCIENCE, 2005, 252 (05) :1657-1661

[4]

BRADFORD SA, 1998, PRACTICAL SELF STUDY, P111

[5] Effect of molecular structure on the efficiency of amides and thiosemicarbazones used for corrosion inhibition of mild steel in hydrochloric acid [J].

Ebenso, EE ;

Ekpe, UJ ;

Ita, BI ;

Offiong, OE ;

Ibok, UJ .

MATERIALS CHEMISTRY AND PHYSICS, 1999, 60 (01) :79-90

[6] Effect of acidity level Ro(H) on the corrosion of steel in concentrated HCL solutions [J].

El Ouafi, A ;

Abed, Y ;

Hammouti, B ;

Kertit, S .

ANNALES DE CHIMIE-SCIENCE DES MATERIAUX, 2001, 26 (05) :79-84

[7]

GARVERICK L, 1994, CORROSION PETROCHEMI, P178

[8] A series of simple basic indicators. I. The acidity functions of mixtures of sulfuric and perchloric acids with water [J].

Hammett, LP ;

Deyrup, AJ .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1932, 54 :2721-2739

[9] Reaction rates and indicator acidities [J].

Hammett, LP .

CHEMICAL REVIEWS, 1935, 16 (01) :67-79

[10]

Hammouti B, 1998, B ELECTROCHEM, V14, P49

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