1-Methyl-3-pyridine-2-yl-thiourea as inhibitor for acid corrosion of stainless steel

被引：20

作者：

Hosseini, S. M. A. ^{[1
]}

Salari, M. ^{[1
]}

Ghasemi, M. ^{[1
]}

机构：

[1] Shahid Bahonar Univ Kerman, Dept Chem, Kerman 76169, Iran

来源：

MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION | 2009年 / 60卷 / 12期

关键词：

MILD-STEEL; IRON;

D O I：

10.1002/maco.200905214

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The inhibiting effect of 1-methyl-3-pyridine-2-yl-thiourea (MPT) on the corrosion of stainless steel in 0.5 M H2SO4 solution was investigated using weight loss and potentiostatic polarization techniques. The percentage inhibition efficiencies and surface coverage degrees increased with increasing additive concentration. Potentiostatic polarization studies revealed that MPT is of the mixed-type inhibitor in 0.5 M H2SO4 solution. The adsorption of this inhibitor is also found to obey the Langmuir adsorption isotherm. From the adsorption isotherm, value of the Delta G(ads) for the adsorption process was calculated. From the corrosion rate obtained at 25-55 degrees C E-a, Delta H-a and possible mechanism have been proposed. Scanning electron microscopy (SEM) was done from the surface of the exposed sample indicating uniform film on the surface.

引用

页码：963 / 968

页数：6

共 25 条

[1] Abd El-Rehim SSA, 1999, J APPL ELECTROCHEM, V29, P593
[2] Rhodanine azosulpha drugs as corrosion inhibitors for corrosion of 304 stainless steel in hydrochloric acid solution
Abdallah, M
[J]. CORROSION SCIENCE, 2002, 44 (04) : 717 - 728
[3] ABDALLAH M, 1998, J ELECTROCHEM SOC IN, P35
[4] INHIBITION OF THE CORROSION OF IRON BY OXYGEN AND NITROGEN-CONTAINING COMPOUNDS
ALNEAMI, KK
MOHAMED, AK
KENAWY, IM
FOUDA, AS
[J]. MONATSHEFTE FUR CHEMIE, 1995, 126 (04): : 369 - 376
[5] The corrosion inhibition of austenitic chromium-nickel steel in H2SO4 by 2-butyn-1-ol
Bilgiç, S
Sahin, M
[J]. MATERIALS CHEMISTRY AND PHYSICS, 2001, 70 (03) : 290 - 295
[6] A POINT-DEFECT MODEL FOR ANODIC PASSIVE FILMS .1. FILM GROWTH-KINETICS
CHAO, CY
LIN, LF
MACDONALD, DD
[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1981, 128 (06) : 1187 - 1194
[7] HALOACETIC ACIDS AS CORROSION-INHIBITORS FOR BRASS IN NITRIC-ACID
DINNAPPA, RK
MAYANNA, SM
[J]. CORROSION, 1982, 38 (10) : 525 - 531
[8] BENZOIC-ACID AND SUBSTITUTED BENZOIC-ACIDS AS INTERFACIAL CORROSION-INHIBITORS FOR COPPER IN HCLO4
DINNAPPA, RK
MAYANNA, SM
[J]. JOURNAL OF APPLIED ELECTROCHEMISTRY, 1981, 11 (01) : 111 - 116
[9] Some nonionic surfactants as inhibitors of the corrosion of iron in acid chloride solutions
Elachouri, M
Hajji, MS
Salem, M
Kertit, S
Aride, J
Coudert, R
Essassi, E
[J]. CORROSION, 1996, 52 (02) : 103 - 108
[10] The inhibition effect of the new Schiff base, namely 2,2'-[bis-N(4-choloro benzaldimin)]-1, 1'-dithio against mild steel corrosion
Hossein, S. M. A.
Azimi, A.
[J]. MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION, 2008, 59 (01): : 41 - 45

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