Inhibition Effect of Deanol on Mild Steel Corrosion in Dilute Sulphuric Acid

被引：0

作者：

Loto, Roland Tolulope ^{[1
,2
]}

Loto, Cleophas Akintoye ^{[1
,2
]}

Popoola, Abimbola Patricia ^{[2
]}

机构：

[1] Covenant Univ, Dept Mech Engn, Ota, Ogun State, Nigeria

[2] Tshwane Univ Technol, Dept Chem Met & Mat Engn, Pretoria, South Africa

来源：

SOUTH AFRICAN JOURNAL OF CHEMISTRY-SUID-AFRIKAANSE TYDSKRIF VIR CHEMIE | 2015年 / 68卷

关键词：

Organic compounds; metals; deanol; corrosion; sulphuric acid; inhibitor; SYNERGISTIC INHIBITION; CHLORIDE-IONS;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The influence of deanol on the corrosion behaviour of mild steel in dilute sulphuric acid with sodium chloride addition was studied by means of mass-loss, potentiodynamic polarization, electrode potential monitoring, scanning electron microscopy and statistical analysis. Results show that deanol performed excellently with a maximum inhibition efficiency of 97.9% obtained from the mass loss technique and 98.23% from the potentiodynamic polarization tests at the maximum deanol concentration evaluated. Polarization studies show that the amino alcohol is a cathodic type inhibitor. Adsorption of deanol on the steel surface was observed to obey the Langmuir and Frumkin adsorption isotherms. Scanning electron microscopy studies confirmed the corrosion protection property of deanol to be through adsorption on the mild steel surface while statistical evaluation showed the overwhelming influence and significance of inhibitor concentration on inhibition efficiency compared with exposure time.

引用

页码：105 / 114

页数：10

共 28 条

[1] Abd El-Rehim SSA, 1999, J APPL ELECTROCHEM, V29, P593
[2] Ali M.R., 2009, J SCI RES, V1, P82, DOI DOI 10.3329/JSR.V1I1.1053
[3] Batis G., 2003, 7 CANMET ACI INT C S, P469
[4] The substituted 1,3,4-oxadiazoles: a new class of corrosion inhibitors of mild steel in acidic media
Bentiss, F
Traisnel, M
Lagrenee, M
[J]. CORROSION SCIENCE, 2000, 42 (01) : 127 - 146
[5] Influence of pitting and iron oxide formation during corrosion of carbon steel in unbuffered NaCl solutions
Caceres, Luis
Vargas, Tomas
Herrera, Leandro
[J]. CORROSION SCIENCE, 2009, 51 (05) : 971 - 978
[6] The role of chloride ions in pitting of carbon steel studied by the statistical analysis of electrochemical noise
Cheng, YF
Wilmott, M
Luo, JL
[J]. APPLIED SURFACE SCIENCE, 1999, 152 (3-4) : 161 - 168
[7] Ejikeme PM., 2015, INT J MAT CHEM, V5, P14, DOI [10.5923/j.ijmc.20150501.03, DOI 10.5923/J.IJMC.20150501.03]
[8] Chemistry of corrosion inhibitors
Gaidis, JM
[J]. CEMENT & CONCRETE COMPOSITES, 2004, 26 (03) : 181 - 189
[9] Synergism and antagonism in mild steel corrosion inhibition by sodium dodecylbenzenesulphonate and hexamethylenetetramine
Hosseini, M
Mertens, SFL
Arshadi, MR
[J]. CORROSION SCIENCE, 2003, 45 (07) : 1473 - 1489
[10] An investigation on the inhibition effects of some new dithiophosphonic acid monoesthers on the corrosion of the steel in 1 M HCl medium
Karakus, M
Sahin, M
Bilgic, S
[J]. MATERIALS CHEMISTRY AND PHYSICS, 2005, 92 (2-3) : 565 - 571

← 1 2 3 →