Corrosion Rate and Potential Calculator: Iron in HCl
Enter your student ID and press Calculate.
Final results
Corrosion potential Ecorr
Corrosion current density icorr
log icorr
Corrosion rate (approx.)
Tafel and Butler-Volmer plot
Anodic TafelCathodic TafelButler-VolmerCorrosion point
Parameters derived from your ID
Calculation method
E_eq,Fe = −0.44 + (0.0592/2)·log a(Fe²⁺)
E_eq,H = −0.0592·pH
log i_corr = [E_eq,H − E_eq,Fe + βa·log i0a + βc·log i0c] / (βa + βc)
E_corr = E_eq,Fe + βa·(log i_corr − log i0a)
CR (mm/yr) = 0.01160 · i_corr (µA/cm²)
E_eq,H = −0.0592·pH
log i_corr = [E_eq,H − E_eq,Fe + βa·log i0a + βc·log i0c] / (βa + βc)
E_corr = E_eq,Fe + βa·(log i_corr − log i0a)
CR (mm/yr) = 0.01160 · i_corr (µA/cm²)