The inhibitive effect and adsorption behavior of ginger roots extract (GRE) on the corrosion of carbon steel in 1.0 M HCl solution at different temperatures were investigated.
Chenopodium extract was examined as a corrosion inhibitor for Cu in 1M HNO3 by utilizing chemical and electrochemical techniques. The results displayed that Chenopodium extract (CE) could play important role as a corrosion inhibitor for Cu in 1 M HMO3. The protection efficiency (PE) increases with rise of the CE concentrations (reached to < 92%) due to the adsorption of the CE molecules on the Cu surface. Furthermore, it was recognized that the adsorption obeyed Langmuir isotherm. The polarization data showed that this CE acts as mixed kind inhibitor. In addition some thermodynamic data were measured and explained.
The performance of extract of myrrh plant as corrosion inhibitor for Cu–Zn alloy in 3.5 wt% NaCl solution polluted by 16 ppm sulfide. The results demonstrated that the corrosion rate of Cu–Zn alloy was decreased in the presence of myrrh extract.
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