Propargyl as Corrosion Inhibitor for Al-5%Si/15%SiC Composite in 0.5molar Sodium Hydroxide
| Autor: | F. Asuke, O.B. Oloche, S.A. Yaro |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
Materials science
020209 energy General Chemical Engineering Composite number Inorganic chemistry 02 engineering and technology General Chemistry Activation energy Condensed Matter Physics Corrosion lcsh:Chemistry Corrosion inhibitor chemistry.chemical_compound Adsorption chemistry lcsh:QD1-999 Sodium hydroxide Propargyl 0202 electrical engineering electronic engineering information engineering Gravimetric analysis General Materials Science |
| Zdroj: | Eurasian Chemico-Technological Journal , Vol 11, Iss 2, Pp 141-147 (2009) |
| ISSN: | 2522-4867 1562-3920 |
| Popis: | The corrosion characteristic of Al-5%Si/15%SiC composite in 0.5molar sodium hydroxide solution (cauustic 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 rangges 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 unto the surface of the composite. |
| Databáze: | OpenAIRE |
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