Artículos de revistas
Corrosão do aço-carbono: uma abordagem do cotidiano no ensino de química
Fecha
2015-02-01Registro en:
Quimica Nova. Sao Paulo: Soc Brasileira Quimica, v. 38, n. 2, p. 293-296, 2015.
0100-4042
10.5935/0100-4042.20140313
S0100-40422015000200293
WOS:000353158400022
S0100-40422015000200293.pdf
9386730770147178
Autor
Universidade Estadual Paulista (Unesp)
Institución
Resumen
In this paper, two simple ways of evaluating carbon steel sheet corrosion in a hydrochloric acid solution were presented as an experimental proposal for corrosion teaching. The first method is based on direct measurements of mass before and after corrosion tests. The second approach follows the principle of visual colorimetry by which soluble corrosion products are transformed into red complexes allowing monitoring of the products'concentration according to increases in solution color intensity. Both methods proved able to determine the corrosion rate.