Anthranilic Acid as Corrosion Inhibitor for Mild Steel in Hydrochloric Acid Media

AbstractThe inhibition effect of Anthranilic acid on corrosion of mild steel in 1M HCl solution was investigated by using traditional weight loss method, Polarization measurements and Electrochemical Impedance Spectroscopy (EIS) measurements. Small amount such as500ppm of the Inhibitor shows good inhibition efficiency. Polarisation measurements infer inhibitor acts as mixed type inhibitor. Weight loss, Polarisation and Electrochemical impedance results are gives same order of inhibition efficienc

Electrochemical study on inhibitory effect of Aspirin on mild steel in 1 M hydrochloric acid

Aspirin was investigated as a good corrosion inhibitor for mild steel in 1 M hydrochloric acid at a temperature region from 303 to 333 K. The computed inhibition efficiency increases by increasing the inhibitor concentration and decreases by increasing the temperature. The investigation was done by weight loss, electrochemical measurements such as Tafel polarization and electrochemical impedance spectroscopy. Inhibition effect is attributed to the adsorption of inhibitor on the surface of the mild steel. The Tafel method reveals that the Aspirin acts as a mixed type inhibitor. Activation parameters suggest that the adsorption process is exothermic in nature. SEM photographs of mild steel in the absence and presence of inhibitor visualize the adsorption layer on the surface of the mild steel

Objective mapping of observed sub-surface mesoscale cold core eddy in the Bay of Bengal by stochastic inverse technique with tomographically simulated travel times

307-324Present study consists the acoustic characteristics of a sub-surface cold core eddy observed (below the mixed layer between depths of 50 and 300m, with a diameter of about 200 km having temperature drop of 5ºC at the center) in the Bay of Bengal during south-west monsoon season and explore possibility to reconstruct the acoustic profile of the eddy by Stochastic Inverse Technique. A simulation experiment on forward and inverse problems for observed sound velocity perturbation field has been attempted for a range of 650 km (in the vertical slice) keeping the single source-receiver configuration (at the channel axis depth) in the SOFAR channel, under peculiar characteristics viz, depth-limited environment and weak gradient waters of the Bay of Bengal. For the formulation of the Stochastic Inverse, both vertical and horizontal structure of the ocean has been modeled using empirical orthogonal modes. Present Ocean Acoustic Tomography’s (OAT’s) simulation experiment results reveal that one can objectively map/monitor even the small mesoscale sub-surface eddies by stochastic inverse technique keeping single source and receiver in the SOFAR channel separated probably by larger distances also under such depth-limited environment of the Bay of Bengal