Research Article

Electrochemical and Thermodynamic Investigation on Corrosion Inhibition of C38 Steel in 1M Hydrochloric Acid Using the Hydro-Alcoholic Extract of Used Coffee Grounds

Figure 8

(a) Arrhenius plots, (b) transition state plots for C38 steel in 1 M HCl without and with different concentration of HECG.
(a)
(b)