// multi-utility computation suite · offline · instant · precise
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sci.corrosion-rate-Tafel Calculator
Calculates corrosion current density from Tafel slopes and plots Evans diagram from anodic and cathodic polarisation data. The Stern-Geary equation gives i_corr = B/R_p where R_p is the polarisation resistance — linear polarisation resistance (LPR) measurement gives rapid non-destructive corrosion rate monitoring.
Inputs
Icorr Ua Cm2
Mass per unit volume (kg/m³). Water: 1,000. Air: 1.225. Steel: 7,850. Affects buoyancy, flow, and structural loads.
M G Mol
Total mass (kg). Distinct from weight — weight = mass × gravity. Mass is constant; weight varies with location.
N Eq
Count of items or occurrences.
Rho G Cm3
Mass per unit volume (kg/m³). Water: 1,000. Air: 1.225. Steel: 7,850. Affects buoyancy, flow, and structural loads.
Results
corrosion rate (mm/yr)
The value at the specified point or condition.
corrosion rate (mpy — mils/yr)
The value at the specified point or condition.
mass loss rate (g/m²·yr)
The computed mass of the object or substance.
i_corr (μA/cm²)
Reference formula or conversion factor shown for context.
CR = i_corr·M / (n·F·ρ)
Sample size or count used in the calculation.
severity
Reference formula or conversion factor shown for context.