On the inhibition of mild steel corrosion by 4-amino-5-phenyl-4H-1, 2, 4-trizole-3-thiol
2009; Elsevier BV; Volume: 52; Issue: 2 Linguagem: Inglês
10.1016/j.corsci.2009.10.009
ISSN1879-0496
AutoresAhmed Y. Musa, Abdul Amir H. Kadhum, Abu Bakar Mohamad, Mohd Sobri Takriff, Abdul Razak Daud, Siti Kartom Kamarudin,
Tópico(s)Hydrogen embrittlement and corrosion behaviors in metals
ResumoThe corrosion inhibition of mild steel in a 2.5 M H2SO4 solution by 4-amino-5-phenyl-4H-1, 2, 4-trizole-3-thiol (APTT) was studied at different temperatures, utilising open circuit potential, potentiodynamic and impedance measurements. The results indicate that APTT performed as an excellent mixed-type inhibitor for mild steel corrosion in a 2.5 M H2SO4 solution and that the inhibition efficiencies increased with the inhibitor concentration but decreased proportionally with temperature. The kinetic and thermodynamic parameters for adsorption of APTT on the mild steel surface were calculated. A chemisorption mechanism of APTT molecules on the mild steel surface was proposed based on the thermodynamic adsorption parameters.
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