Descriptions of Standard Models

Title  –  File Name  –  Description

Randles

  • RANDLES.MDL
    • Simple Randles cell.
      The most common model used for bare metal in solution

Diffusion Model

  • OTCWAR.MDL
    • One time-constant.
      A Warburg element models the diffusion process.

Depressed Nyquist

  • CPE.MDL
    • Constant Phase Element
      Similar to the Randles cell, but with a constant-phase element replacing the double-layer capacitance. Used when the semicircle lies below the Real axis on a Nyquist plot.

Coated Rebar

  • REBAR.MDL
    • Coated or passivated rebar in concrete.
      (Use RANDLES.MDL if rebar is uncoated.)

Painted Metal

  • PAINT.MDL
    • Painted metal.
      REAP model includes pore-like defects and possible blistering.

Painted Metal (Modified)

  • REAP2CPE.MDL
    • Painted metal.
      Similar to REAP model, but with constant-phase elements replacing coating capacitance and double-layer capacitance.