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    Volume 3, Issue 1

    Extract of Cassia senna as Green Inhibitor for the Corrosion of Mild Steel in 1M Hydrochloric Acid Solution

    (Received 13 February 2014; accepted 1 July 2014)

    Published Online: 2014

    CODEN: ACEMF9

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    Abstract

    Anticorrosion activity of Cassia senna leaf extract (CSLE) as a corrosion inhibitor in 1M hydrochloric acid solution (HCl) has been investigated using weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM), UV-visible spectroscopy, and x-ray diffraction (XRD) studies. Results show that the inhibition efficiency decreases with the rise of temperature from 308 to 313 K. Polarization measurements show that the CSLE acts as a mixed-type inhibitor. Nyquist plot shows that on increasing CSLE concentration, the charge transfer increases and the double-layer capacitance decreases. The adsorption of CSLE on mild steel obeys the Langmuir adsorption isotherm. Scanning electron microscopy (SEM) studies confirm the adsorption of CSLE on mild steel surfaces.


    Author Information:

    Karthik, R.
    Dept. of Chemistry, Thiagarajar College, Madurai,

    Muthukrishnan, P.
    Dept. of Chemistry, Thiagarajar College, Madurai,

    Elangovan, A.
    Dept. of Chemistry, Thiagarajar College, Madurai,

    Jeyaprabha, B.
    Dept. of Civil Engineering, Fatima Michael College of Engineering and Technology, Madurai,

    Prakash, P.
    Dept. of Chemistry, Thiagarajar College, Madurai,


    Stock #: ACEM20140010

    ISSN:2165-3984

    DOI: 10.1520/ACEM20140010

    Author
    Title Extract of Cassia senna as Green Inhibitor for the Corrosion of Mild Steel in 1M Hydrochloric Acid Solution
    Symposium ,
    Committee A01