Journal of Metallurgy / 2012 / Article / Tab 2 / Research Article
Effect of Diacetyl Monoxime Thiosemicarbazone on the Corrosion of Aged 18 Ni 250 Grade Maraging Steel in Sulphuric Acid Solution Table 2 Results of Tafel polarization studies on 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)
(V)
× (10−4 ) (A cm−2 )
(V dec−1 )
(V dec−1 )C.R in mm Y−1 IE (%) 303 0.00 −0.310 75.26 0.107 0.103 87.30 1.14 −0.310 27.18 0.103 0.102 31.53 63.9 2.85 −0.306 11.72 0.095 0.106 13.60 84.4 5.70 −0.306 9.57 0.106 0.113 11.10 87.3 8.55 −0.303 7.73 0.093 0.111 8.97 89.7 308 0.00 −0.312 85.43 0.122 0.127 99.10 1.14 −0.310 32.07 0.127 0.098 37.20 62.5 2.85 −0.309 21.64 0.098 0.112 25.10 74.7 5.70 −0.304 13.19 0.112 0.115 15.30 84.6 8.55 −0.307 10.99 0.115 0.118 12.75 87.1 313 0.00 −0.309 96.55 0.118 0.112 112.00 1.14 −0.309 37.67 0.112 0.086 43.70 61.0 2.85 −0.307 26.21 0.086 0.084 30.40 72.9 5.70 −0.308 17.76 0.084 0.106 20.60 81.6 8.55 −0.304 14.40 0.106 0.086 16.70 85.1 318 0.00 −0.312 106.90 0.086 0.117 124.00 1.14 −0.305 50.95 0.117 0.098 59.10 56.5 2.85 −0.305 36.81 0.098 0.095 42.70 68.6 5.70 −0.308 24.22 0.095 0.089 28.10 79.3 8.55 −0.301 19.05 0.089 0.098 22.10 83.8 323 0.00 −0.311 117.24 0.098 0.123 136.00 1.14 −0.303 58.97 0.123 0.095 68.40 49.7 2.85 −0.305 42.84 0.095 0.091 49.70 63.5 5.70 −0.303 30.09 0.091 0.088 34.90 74.3 8.55 −0.301 25.95 0.088 0.088 30.10 77.9