Research Article

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

Table 4

Activation parameters for the corrosion of aged maraging steel in 0.5 M sulphuric acid with and without different concentrations of DAMTSC.

Conc. of inhibitor
( 10−4) (M)

kJ mol−1

kJ mol−1

J mol−1 K−1

018.115.5−156.7
1.1432.730.1−117.3
2.8547.344.6−77.7
5.7048.445.8−75.7
8.5551.148.4−62.5