期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2010
卷号：1
期号：1
页码：1-8
出版社：University of Mohammed Premier Oujda
摘要：The influence of inhibitor concentration and temperature on the corrosion behaviour of steel in molar HCl solution has been investigated by weight loss method. Results obtained show that the inhibitory effect of 2-phenylthieno(3, 2-b)quino xaline (P4) increases with increasing P4 concentration to attain the highest value (95%) at 5 10-4M. The determination of the corrosion rate at the temperature range (308 - 353K) indicates that E% decreases with rise o f temperature. Arrhenius law and its transition equation lead to estimate activation parameters of corrosion process. P4 inhibits well steel at moderate temperature and adsorbs according to the Langmuir isotherm. Plots of lo garithm of corrosion rate function of the reciprocate of temperature as well as Van't hoff and Gibbs equations facilitated the access to thermodynamic parameters such as equilibrium constant, adsorption heat and adsorption entropy. The various parameters of activation and adsorption may be a good tool to discuss manner of adsorption of organic compound. Attempt to correlate molecular structure to quantum indices was made
