Study the corrosion inhibition of mix of caffeine and iodua for CT3 steel in 1M HCl solution by electrochemical methods   Authors:  Truong, Thi Thao   Corrosion inhibition of mild carbon steel, CT3,  in 1.0 M HCl solution  by iodide  (with different concentrations, from 0.1g/l to 5.0g/l), mix  of caffeine and iodide was investigated by electrochemical methods and  micro surface observations (SEM). Experiment result showed that: (1) as  the concentration of iodide increases, the inhibition efficiency  increases;  Iodide acts as a mix – type inhibitor but inhibits anodic  reaction is predominant. (2) Mix of 1.0 g/l iodide ang caffeine acts as a  typical mix – type inhibitor. the current densities of both of anodic  and cathode are decline when concentration of caffeine is 1.0 g/l or  more. Inhibition efficiency max is approximately 96% at concentration of  5.0 g/l caffeine, the inhibition efficiency maintained relatively  stable within 5 days...    Title:  Study the corrosion i...