Research Article

Effect of Diacetyl Monoxime Thiosemicarbazone on the Corrosion of Aged 18 Ni 250 Grade Maraging Steel in Sulphuric Acid Solution

Table 3

EIS data of aged maraging steel in 0.5 M sulphuric acid with and without different concentrations of DAMTSC at various temperatures.

Temp. (K)Conc. of inhibitor
( 10−4) (M)
Ohm·cm2 Ohm·cm2 Ohm·cm2 (10−6) (F) (10−6) (F)IE (%)

3030.002.82.8014490
1.141.175.666.83874992059.0
2.855.379.3814.75799976281.0
5.706.1213.519.62653159085.7
8.557.8917.825.70509116389.1
3080.002.302.3087620
1.145.105.101011254.9
2.858.878.87756674.2
5.705.611.216.8954634786.3
8.557.1911.618.7765485087.7
3130.001.61.60113500
1.144.323.322372451.8
2.855.755.752088072.2
5.703.437.3410.824171134085.2
8.554.27.912.114501080086.7
3180.001.41.4226570
1.142.72.73132648.1
2.854.84.82766770.8
5.703.255.058.326252347183.1
8.553.405.38.715622012583.9
3230.001.31.3541000
1.142.32.33354043.5
2.853.53.52450062.9
5.701.444.165.629662076076.8
8.552.204.907.116951560081.7