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International Scholarly Research Notices
Table of Contents
International Scholarly Research Notices
/
2012
/
Article
/
Tab 2
/
Research Article
Black Wattle Tannin As Steel Corrosion Inhibitor
Table 2
Polarization parameters for the corrosion of carbon steel immersed in 0.1 mol L
−1
Na
2
SO
4
solution (pH 6.0), in the presence and absence of tannin, for different periods.
𝑗
c
o
r
r
(
μ
A cm
−2
)
𝐸
c
o
r
r
(V)
𝑅
𝑝
(
Ω
cm
2
)
IE (%)
1 day
39.66
−0.73
486.46
91.06
1 day with tannin
0.883
−0.50
5446.0
3 days
20.52
−0.73
461.37
93.03
3 days with tannin
1.512
−0.72
6622.2
7 days
13.58
−0.75
481.21
75.74
7 days with tannin
3.241
−0.72
1984.3