Table 2: Polarisation and impedance parameters for steel in 1.0 M HCl and 0.5 M H2SO4 in presence of different concentration of lamotrigine.

Corrosive
media
PolarisationEIS
Inhibitor concentration (mM) versus SCE
(mV)

( A cm−2)
(mV dec−1) (mV dec−1)% (  Ω cm2) ( F cm−2)%

HClBlank−0.484170.01268611262
0.5−0.46043.21127674.54182773.2
1.0−0.46911.410215193.216701293.1
2.5−0.4677.011214295.829418.896.2
5.0−0.4605.111210797.033509.996.6

H2SO4Blank−0.489155.6123887271
0.5−0.48049.21157768.32225667.5
1.0−0.47830.4946580.45902287.5
2.5−0.45920.311413486.911121693.5
5.0−0.4639.811011693.716021095.5