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International Journal of Corrosion
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International Journal of Corrosion
/
2015
/
Article
/
Tab 5
/
Research Article
Eco-Friendly Corrosion Inhibition of Pipeline Steel Using
Brassica oleracea
Table 5
Potentiodynamic polarization parameters for pipeline steel in 0.5 M H
2
SO
4
with and without different concentrations of
Brassica oleracea
extract at 333 K.
Concentration (g/L)
Blank
0.01
0.1
1.0
Eff. (
)
79.93
98.88
98.44
(A/cm
2
)
5.88 e
+4
1.18 e
+4
6.54 e
+2
9.16 e
+2
(mV dec
−1
)
591.73
299.31
133.35
153.48
(mV dec
−1
)
567.15
273.71
58.65
44.45
(mV versus SCE)
−406.57
−428.06
−485.56
−469.41