Estudo da corrosão no aço carbono 1020 protegido com óleo de coco saponificado: análise físico-química do comportamento químico do tensoativo
Corrosion inhibitors in solution are utilized to minimize processes from corrosion in steel. Of the present dissertation was evaluated the efficiency by inhibition from the surfactant saponified coconut oil (OCS) in the carbon steel 1020 through in linear polarization electrochemistry technique, wel...
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| Muut tekijät: | |
| Aineistotyyppi: | Dissertação |
| Kieli: | por |
| Julkaistu: |
Universidade Federal do Rio Grande do Norte
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| Linkit: | https://repositorio.ufrn.br/jspui/handle/123456789/17628 |
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| Yhteenveto: | Corrosion inhibitors in solution are utilized to minimize processes from
corrosion in steel. Of the present dissertation was evaluated the efficiency by
inhibition from the surfactant saponified coconut oil (OCS) in the carbon steel 1020
through in linear polarization electrochemistry technique, well as, studied the process
from adsorption through from the isotherms from Langmuir, Frumkin and Temkin.
The corrosion current was determined through in Tafel extrapolation from the curves
in the polarization, and then, was calculated the efficiency in the inhibitor to each
concentration and temperature. Were studied four concentrations (12,5 ppm, 25
ppm, 50 ppm, and 75 ppm) in the inhibitor OCS and one in the NaCl salt (10.000
ppm) in six temperatures (301 K, 308 K, 313 K, 318 K, 323 K, and 328 K) in triplicate.
By the results obtained observed that the technique applied can evaluated with
rapidity and efficiency corrosion inhibitors. In relation to the isotherms, the than best
appropriated was the in Langmuir and in the concentrations studied, the that
obtained the best efficiency was the concentration of 75 ppm |
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