Inhibition of corrosion of mild steel by nitrite, hydrogen phosphate and molybdate ions in aqueous solution of sodium chloride

被引：0

作者：

Mehra, R ^{[1
]}

Soni, A ^{[1
]}

机构：

[1] Maharshi Dayanand Saraswati Univ, Dept Pure & Appl Chem, Ajmer 305009, India

来源：

INDIAN JOURNAL OF ENGINEERING AND MATERIALS SCIENCES | 2002年 / 9卷 / 02期

关键词：

Activation energy - Adsorption - Corrosion - Free energy - Molybdate minerals - Sodium chloride - Thermodynamics;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Inhibition of mild steel in aqueous sodium chloride by sodium nitrite, disodium hydrogen phosphate and sodium molybdate with respect to the inhibitor concentration and temperature is reported here. Na2MoO4 shows highest efficiency (90.00%) followed by NaNO2 (87.56%) and Na2HPO4 (85.36%). As such, the order of inhibition observed is Na2MoO4>NaNO2>Na2HPO4. Thermodynamic as well as kinetic parameters including activation energy (E-a), change in free energy of adsorption (DeltaG), entropy of adsorption (DeltaS), corrosion current (I-corr), open circuit potential (OCP), Tafel slopes (betaa, betac) and threshold limiting value (TLV) for protective film formation have also been calculated from weight loss and potentiostatic polarisation methods.

引用

页码：141 / 146

页数：6

共 50 条

[1] Inhibition of corrosion of mild steel by nitrite in aqueous solution in presence of aggressive ions
Mehra, R
Soni, A
[J]. INDIAN JOURNAL OF ENGINEERING AND MATERIALS SCIENCES, 2002, 9 (03) : 218 - 222
[2] Inhibition of corrosion of cast iron by nitrite, hydrogen phosphate, and molybdate ions in corrosive water
Mehra, R
Soni, A
[J]. CHEMICAL ENGINEERING COMMUNICATIONS, 2004, 191 (11) : 1502 - 1524
[3] The Synergistic Effect of Iodide and Sodium Nitrite on the Corrosion Inhibition of Mild Steel in Bicarbonate-Chloride Solution
Eyu, Gaius Debi
Will, Geoffrey
Dekkers, Willem
MacLeod, Jennifer
[J]. MATERIALS, 2016, 9 (11):
[4] The inhibition of corrosion of mild steel by some fluoroquinolones in sodium chloride solution
Acharya, S
Upadhyay, SN
[J]. TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS, 2004, 57 (03) : 297 - 306
[5] Effects of time and temperature on the mild steel corrosion inhibition by molybdate and nitrite
Mustafa, CM
Rahman, AKMO
Begum, DA
[J]. INDIAN JOURNAL OF CHEMICAL TECHNOLOGY, 1996, 3 (01) : 44 - 48
[6] Corrosion inhibition of mild steel in aqueous binary solution of aggressive ions
Prasad, D
Jha, GS
Choudhary, BP
Sanyal, S
[J]. JOURNAL OF THE INDIAN CHEMICAL SOCIETY, 2002, 79 (03) : 264 - 266
[7] The inhibitive mechanisms of nitrite and molybdate anions on initiation and propagation of pitting corrosion for mild steel in chloride solution
Zhou, Yong
Zuo, Yu
[J]. APPLIED SURFACE SCIENCE, 2015, 353 : 924 - 932
[8] THE INHIBITION EFFECT OF SODIUM MOLYBDATE ON THE INITIATION OF CORROSION-FATIGUE OF 1020 MILD-STEEL IN AQUEOUS-SOLUTION
HUSAIN, A
HABIB, K
JARMAN, R
[J]. DESALINATION, 1994, 99 (01) : 113 - 118
[9] INHIBITION OF CORROSION OF MILD-STEEL IN AQUEOUS-SOLUTION OF CHLORIDE BY CHROMATE
SANYAL, S
SANYAL, S
[J]. JOURNAL OF THE INDIAN CHEMICAL SOCIETY, 1988, 65 (01) : 72 - 74
[10] Corrosion inhibition of mild steel in sodium chloride solution by some zinc complexes
Mahdavian, M.
Naderi, R.
[J]. CORROSION SCIENCE, 2011, 53 (04) : 1194 - 1200

← 1 2 3 4 5 →