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Title: | A COMBINED EXPERIMENTAL AND THEORETICAL INVESTIGATION ON PYRAZOLONE DERIVATIVE AS CORROSION INHIBITOR FOR MILD STEEL IN 0.5 M SULPHURIC ACID MEDIA |
Authors: | Nalini, D Kohilah, K S Sowmya, Ramkumar |
Keywords: | acid corrosion mild steel pyrazolone theoretical studies sulphuric acid medium |
Issue Date: | 23-Apr-2014 |
Publisher: | Portugaliae Electrochimica Acta |
Abstract: | The inhibition action of the Pyrazolone Derivative (PYR) on the corrosion of mild steel in 0.5 M sulphuric acid was investigated by weight loss, polarization, impedance and SEM. Results obtained revealed that PYR performed excellently as corrosion inhibitor with efficiency of 91% at 11 ppm at 298 K. Its adsorption on mild steel obeys Langmuir and Temkin isotherm. Polarization curves indicate that PYR behaves as mixed type. The value of ∆G° ads indicates the spontaneous physisorption of PYR. The SEM results confirm the presence of a protective surface layer over the mild steel surface. The reactivity of the compound was analysed through theoretical calculation. |
URI: | https://www.peacta.org/articles_upload/PEA_32_1_2014_109_123_.pdf |
ISSN: | 1647-1571 |
Appears in Collections: | 2.Article (14) |
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File | Description | Size | Format | |
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A COMBINED EXPERIMENTAL AND THEORETICAL INVESTIGATION ON PYRAZOLONE DERIVATIVE AS CORROSION INHIBITOR FOR MILD STEEL IN 0.5 M SULPHURIC ACID MEDIA.pdf | 953.22 kB | Adobe PDF | View/Open |
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