Propargyl as Corrosion Inhibitor for Al-5%Si/15%SiC Composite in 0.5 molar Sodium Hydroxide

Authors

  • F. Asuke Department of metallurgical and materials engineering, Ahmadu Bello University, zaria, P.M.B 1045, Nigeria
  • S. A. Yaro Department of metallurgical and materials engineering, Ahmadu Bello University, zaria, P.M.B 1045, Nigeria
  • O. B. Oloche Department of metallurgical and materials engineering, Ahmadu Bello University, zaria, P.M.B 1045, Nigeria

DOI:

https://doi.org/10.18321/ectj308

Abstract

The corrosion characteristic of Al-5%Si/15%SiC composite in 0.5 molar sodium hydroxide solution (caustic soda) using propargyl as corrosion inhibitors was investigated employing gravimetric and potential measurements. The research was carried out at different inhibitor concentrations, time and temperature ranges of 0.5 – 2.5% v/v, 1–5 hours and 30–70 °C respectively. Results obtained revealed that propargyl is a moderate corrosion inhibitor for the composite, with maximum inhibition efficiency of 59.23% at 30 °C and inhibitor concentration of 1.5% v/v. Thermodynamic parameters such as heat of adsorption, free energy and activation energy were obtained from experimental data and the mechanism of inhibition was elucidated. The inhibitor is physically and chemically absorbed onto the surface of the composite.

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Published

2009-04-20

How to Cite

Asuke, F., Yaro, S. A., & Oloche, O. B. (2009). Propargyl as Corrosion Inhibitor for Al-5%Si/15%SiC Composite in 0.5 molar Sodium Hydroxide. Eurasian Chemico-Technological Journal, 11(2), 141–147. https://doi.org/10.18321/ectj308

Issue

Vol. 11 No. 2 (2009)

Section

Articles

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