Investigation of Sida acuta (Wire Weed) Plant Extract as Corrosion Inhibitor for Aluminium-Copper-Magnessium Alloy in Acidic Medium

Fatai Afolabi Ayeni, Saheed Alawode, Dorcas Joseph, Patrick Sukop, Victoria Olawuyi, Temitope Emmanuel Alonge, Oladuuni Oyelola Alabi, Oluwakayode Oluwabunmi, Francis Ireti Alo

Materials Science and Engineering, Obafemi Awolowo University, Ile Ife, Nigeria.
National Metallurgical Development Centre (NMDC), Jos, Nigeria.
Prototype Engineering Development Institute (PEDI), Ilesha, Nigeria.

DOI: 10.4236/jmmce.2014.24033                

Abstract

This work is an investigation of the aqueous corrosion inhibition of Al-Cu-Mg Alloy in acidic medium using extract of Sida acuta (wire weed) plant as corrosion inhibitor at 10%, 20%, 30% and 40% v/v of the extract. After exposing the alloy to the medium, the results showed that the plant extract inhibited the acid induced corrosion. The presence of Sida acuta plant extract reduces corrosion rate from 0.0012 to 0.0001 MPY and percentage protection increases from 37.42% to 93.63% within a ten-day period with increase in percentage volume of the extract. The result has clearly shown that Sida acuta plant extract can be used as a corrosion inhibitor in the part of chemical plant that is made of Al-Cu-Mg Alloy where acid is used for descaling and cleaning.

Keywords

Corrosion Inhibition, Sida acuta, Immersion Corrosion Test, Weight Loss, Percentage Protection, Acid Induced Corrosion

Conflicts of Interest

The authors declare no conflicts of interest.

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