نتایج جستجو برای: natural corrosion inhibitor

تعداد نتایج: 716657  

DEHGHANIAN C., , MOHAMMADI SABET M., , SAREMI M., ,

The synergistic behavior of molybdate and phosphate ions in mitigating the corrosion of mild steel in simulated cooling water was evaluated performing potentiodynamic polarization and impedance spectroscopy tests. Phosphate and molybdate showed a synergistic effect on corrosion inhibition of steel in simulated cooling water. The observed reduction in anodic and cathodic current densities could ...

Journal: :روش های عددی در مهندسی (استقلال) 0
چنگیز دهقانیان و علی شب زنده آذری ch. dehghanian and a. shabzendeh azari

effectiveness of furfural as an organic inhibitor in 5 percent hydrochloric acid which is used in acid pickling of steel was evaluated. lungmuir, frumkin and flory-huggins isotherms [1, 2] were used to determine the parameters of effective adsorption, free energy and entropy of adsorption. furfural indicated an inhibition less than 17 percent in concentrations of 0.001 mole per liter for a dura...

2016
Umar M. Sani Paul Ocheje Ameh

The corrosion inhibition of zinc in 1.0 M H2SO4 solution by Cefuroxime axetil has been studied in relation to the concentration of the additive using weight loss measurement, Linear polarization resistant (LPR) and potentiodynamic polarization (PDP).The results indicate that Cefuroxime axetil inhibited corrosion reaction in the acid medium and inhibition efficiency increased with inhibitor conc...

Journal: :Current research in green and sustainable chemistry 2021

Owing to the overconsumption of petroleum-based resources and growing demand for fossil-based fuels chemicals, it has become imperative adopt alternative that are renewable. With availability biomass, is believed this technology capability valorize waste into wealth. Recently, efficient utilization plant a chief renewable resource, gained tremendous attention in research as offers distinct soci...

Journal: :Biofouling 2004
Jason S Lee Richard I Ray Edward J Lemieux Alexander U Falster Brenda J Little

Corrosion of 1020 carbon steel coupons in natural seawater over a 1-year period was more aggressive under strictly anaerobic stagnant conditions than under aerobic stagnant conditions as measured by weight loss and instantaneous corrosion rate (polarization resistance). Under oxygenated conditions, a two-tiered oxide layer of lepidocrocite/goethite formed. The inner layer was extremely tenaciou...

2013
A. Pasupathy S. Nirmala

The inhibitive effect of a few thiols were examined as corrosion inhibitors for the corrosion of zinc in 1N HCl and 1N H2SO4 by conventional weight loss and gasometric methods. Results obtained show that all the thiols exhibited high inhibition efficiencies. The inhibition efficiency was found to increase with increase in the inhibitor concentration. The adsorption of the inhibitors obeyed Temk...

2010
Rami Alnaqeib

Corrosion is a natural process that seeks to reduce the binding energy in metals. The end result of corrosion involves a metal atom being oxidized. Surface corrosion on aluminum aircraft skins, near joints and around fasteners, is often an indicator of buried structural corrosion and cracking In this paper we proposed a new method on which we are moving towards designing a method to detect the ...

Journal: :Zaštita materijala 2021

The corrosion resistance of SS 18/8 in natural sea water, presence an inhibitor named Thiourea-Zn2+ has been evaluated. Weight loss method, polarization study and AC impedance spectra have employed to evaluate the alloy system. method reveals that system offers a maximum inhibition efficiency 95% controlling water. Synergism parameters are found be greater than 1, confirming synergistic effect ...

Journal: :Teknika 2022

Inhibitors from natural materials are safe for the environment to replace chemical inhibitors in inhibiting corrosion. The tannin compounds contained Terminalia Catappa leaves extract have ability inhibit corrosion rate. This study aims determine of and its synergism with KI rate mild steel metal. Mild that has been sanded cleaned is then immersed demineralized water. immersion time was carried...

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