Asian Journal of Research in Chemistry
  • Year: 2011
  • Volume: 4
  • Issue: 5

Caesalpinia pulcherrima as Corrosion Inhibitor for Mild Steel in Acid Medium

  • Author:
  • C.V. Deepaa1,, V.G. Vasudha2, T. Sathiyapriya1
  • Total Page Count: 4
  • Page Number: 722 to 725

1Department of Chemistry, Govt. Arts College, Coimbatore, Tamilnadu-641018, INDIA

2Department of Chemistry, Nirmala College, Coimbatore, Tamilnadu-641018, INDIA

*Corresponding Author E-mail: cvdeepaa@gmail.com

Online published on 6 March, 2013.

Abstract

The inhibition efficacy of the extract of Caesalpinia pulcherrima for the corrosion of mild steel in 1N hydrochloric acid was investigated by weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and scanning electron microscope (SEM) techniques. The results indicate that CP flowers serve as a good corrosion inhibitor of mixed type with efficiency as high as 95% at 0.6% inhibitor concentration.

Keywords

Caesalpinia pulcherrima, mild steel, acid medium, corrosion inhibitor