International Journal of Electrochemistry / 2011 / Article / Tab 2

Research Article

Corrosion Inhibition Effect of 4-(2-Diethylamino-Ethylsulfonyl)-Phthalonitrile and 4,5-Bis(Hexylsulfonyl)-Phthalonitrile

Table 2

Specific ( ) and double layer capacitance ( ), phase angle and surface coverage values for SS electrode in the presence and absence of different concentrations of DAESPN and Bis-HSPN in 3.0 M NaCl medium.

Concentration M ,
μF

F
Phase angleθ

Bare161.63.5072
DAESPN 112.04.36800.43
Bis-HSPN 95.73.25780.13
DAESPN 132.85.50821.00
Bis-HSPN 137.83.11700.20
DAESPN 123.05.10800.80
Bis-HSPN 101.13.10750.20
DAESPN 95.02.80740.35
Bis-HSPN 87.32.10740.70