@article{Ali_Mustafa_Habib_2008, title={Effect of Molybdate, Nitrite and Zinc Ions on the Corrosion Inhibition of Mild Steel in Aqueous Chloride Media Containing Cupric Ions}, volume={1}, url={https://banglajol.info/index.php/JSR/article/view/1053}, DOI={10.3329/jsr.v1i1.1053}, abstractNote={<span style="font-size: 9pt;"><p class="MsoNormal" style="margin: 0cm 15.55pt 6pt 14.2pt; text-align: justify; tab-stops: 347.3pt;"><span style="font-size: 9pt;" lang="EN-US"><span style="font-family: Times New Roman;">An investigation has been conducted on the corrosion inhibition of mild steel by molybdate, nitrite and zinc ions in aqueous chloride media containing cupric ions. Molybdate inhibits mild steel corrosion in near neutral and alkaline (pH 6 and above) chloride media and accelerates corrosion in acidic media (below pH 6) both in the presence and absence of cupric ions. Nitrite inhibits mild steel corrosion in chloride media at pH 4.5 and above, but accelerates corrosion below pH 4.5 both in the presence and absence of cupric ions. Molybdate and nitrite act as a synergistic corrosion inhibitor in chloride media with or without cupric ions at pH 4.5 and above. In the acidic region between pH 3 and 4.5, the combination can decrease corrosion with a low concentration of molybdate and high concentration of nitrite. These concentrations depend on the relative amounts of molybdate and nitrite present in the system. Zinc ions inhibit mild steel corrosion only in acidic chloride media. Based on the experimental results, mechanisms of action of molybdate, nitrite and zinc ions on mild steel corrosion in aqueous chloride media with or without cupric ions have been proposed.</span></span></p><p class="MsoNormal" style="margin: 0cm 15.6pt 0pt 14.2pt; text-align: justify; tab-stops: 347.3pt;"><span style="font-family: Times New Roman;"><em style="mso-bidi-font-style: normal;"><span style="font-size: 9pt; mso-bidi-font-weight: bold;" lang="EN-US">Keywords</span></em><span style="font-size: 9pt;" lang="EN-US">: Molybdate; Nitrite; Mild steel; Corrosion rate; Synergistic corrosion inhibitor.</span></span></p><p class="MsoNormal" style="margin: 0cm 15.6pt 0pt 14.2pt; text-align: justify; tab-stops: 347.3pt;"><span style="font-size: 6pt; mso-bidi-font-size: 9.0pt;" lang="EN-US"><span style="font-family: Times New Roman;"><br /></span></span></p><p class="MsoNormal" style="margin: 0cm 15.55pt 0pt 14.2pt; tab-stops: 347.3pt; mso-layout-grid-align: none;"><span style="font-size: 8pt; mso-ansi-language: EN-SG; mso-fareast-language: EN-SG;"><span style="font-family: Times New Roman;">©</span></span><span style="font-size: 8pt; font-family: Symbol;"> </span><span style="font-size: 8pt; mso-ansi-language: EN-SG; mso-fareast-language: EN-SG;"><span style="font-family: Times New Roman;">2009 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved.</span></span></p><p class="MsoNormal" style="margin: 0cm 15.55pt 0pt 14.2pt; tab-stops: 347.3pt; mso-layout-grid-align: none;"><span style="font-family: ’Times New Roman’; font-size: 8pt; text-align: justify;">DOI: 10.3329/jsr.v1i1.1053</span></p></span>}, number={1}, journal={Journal of Scientific Research}, author={Ali, M. R. and Mustafa, C. M. and Habib, M.}, year={2008}, month={Dec.}, pages={82–91} }