F-KCW-Department Publications

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Author: search.filters.author.Menaga MSubject: search.filters.subject.Mild steel

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    GLYCERAL TRINITRATE: AS POTENTIAL CORROSION PROTECTOR FOR MILD STEEL IN ACID MEDIUM ALONG WITH PAINT-COATED STEEL IN A SALINE ENVIRONMENT
    (Oriental Journal of Chemistry, 2021-12-21) Menaga M; Sowmya, Ramkumar; Nalini D
    The importance of mild steel lies in its industrial applications, and the fight against corrosion is very important from an ecological, economic, technical, and aesthetic view. The current study involves the use of pharmaceutical drugs namely GTN towards corrosion inhibiting reaction was examined by gravimetric and electrochemical approaches. From weight loss studies, maximum I.E (%) 94.04% reached for 60 mg/L concentration of GTN for 6 hrs immersion time. The Polarization measurements showed that the behaviour of GTN as mixed nature and surface assimilation of GTN at the superficial, such that water molecules are substituted at the solution-metal boundary. The corrosion resistance property of the studied inhibitor as coating was also evaluated in NaCl which shows better progress corrosion retardation property of coating in the saline medium. Theoretical calculations were employed using DFT to correlate with the experimental observations.
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    EXPERIMENTAL RESULTS WITH HYPOTHETICAL EVIDENCES FOR BEXOL AS AN EFFECTIVE INHIBITOR ON CORROSION INHIBITION OF MILD STEEL IN ACIDIC ENVIRONMENT AND ITS EPOXY COATING BEHAVIOR
    (Oriental Journal of Chemistry, 2020-06-03) Menaga M; Nalini D; Sowmya, Ramkumar
    The inhibitive ability against mild steel corrosion of pharmacologically active compound Bexol towards acid was valued by gravimetric experiments and electrochemical experiments. The results of the weight loss studies indicated inhibition efficiency was boosted with increased concentration of Bexol from 5 mg/L to 45 mg/L in the acid environment. Potentiodynamic polarization behaviour of the metal specimen in presence of Bexol exposed the mixed style inhibitive action. EIS results established that Bexol adsorb at the metal/acid junction by mere electrostatic physical adsorption mechanism to inhibit the corrosion process. Epoxy coated mild steel without and with the studied bexol was used for electrochemical studies in 3.5% of NaCl for different time intervals. The Density Functional -theory was employed to scrutinize inhibition property of the considered inhibitor. Experimental measurement obtained shows perfect fit to the theoretical calculations
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    GLYCERAL TRINITRATE: AS POTENTIAL CORROSION PROTECTOR FOR MILD STEEL IN ACID MEDIUM ALONG WITH PAINT-COATED STEEL IN A SALINE ENVIRONMENT
    (An International Open Access, 2021-12-21) Menaga M; Sowmya, Ramkumar; Nalini D
    The importance of mild steel lies in its industrial applications, and the fight against corrosion is very important from an ecological, economic, technical, and aesthetic view. The current study involves the use of pharmaceutical drugs namely GTN towards corrosion inhibiting reaction was examined by gravimetric and electrochemical approaches. From weight loss studies, maximum I. E (%) 94.04% reached for 60 mg/L concentration of GTN for 6 h immersion time. The Polarization measurements showed that the behaviour of GTN as mixed nature and surface assimilation of GTN at the superficial, such that water molecules are substituted at the solution-metal boundary. The corrosion resistance property of the studied inhibitor as coating was also evaluated in NaCl which shows better progress corrosion retardation property of coating in the saline medium. Theoretical calculations were employed using DFT to correlate with the experimental observations.
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    ELECTROCHEMICAL AND QUANTUM CHEMICAL STUDIES OF CORROSIONINHIBITION OF MILD STEEL IN 1M HCL AND 0.5M H2SO4
    (PSGR Krishnammal College for Women, 2019-09-16) Menaga M; Nalini D; SowmyaRamkumar
    Electrochemical impedance spectroscopy (EIS) and potentiodynamic polarizationmeasurements were used to examine the inhibition effect of drug Pregabalin (PGB) on thecorrosion of mild steel in 1M HCl and 0.5M H2SO4 solution. EIS results indicate that thestudied compound inhibit the acid corrosion by adsorption mechanism. Potentiodynamicpolarization measurement suggest that the inhibitor system act as a mixed type by affectingboth anodic and cathodictafel slopes during the acid corrosion of both the studied medium.Quantum chemical studies are in accordance with the experimental values.