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Influence of cetylpyridiniumbromide on corrosion inhibition of mild steel in sulphuric acid medium

Rajkumar S.Sirsam, Ravindra G.Puri, Pawan D.Meshram

Corrosion is a deterioration process where in the metals and alloys lose their integrity, functionality and appearance. Cetylpyridiniumbromide an organic compound has been used to study the corrosion rate and corrosion inhibition efficiency for mild steel in 1Msulphuric acidmediumbyweight lossmethod. Experimentswere carried out at 303K, 313K, 323Ktemperature by varying concentration of cetylpyridiniumbromide 0.05, 0.15, 0.25, 0.35% for 5 hours. The result shows that the corrosion inhibition efficiency of the compound increases with increasing concentration and declines at higher temperature. To evaluate rate constant and half life period experiments were conducted at different immersion time of 10, 15, 20, 25 hours for varying concentration of cetylpyridiniumbromide. The reaction between mild still and sulphuric acid follows first order rate kinetics.