Eh-pH Diagrams – Pourbaix

Knowledge of the stabilities of ionic and non-ionic species in water solutions is critical to understanding problems of corrosion, dissolution, leaching and selective precipitation. This information can be displayed graphically by Eh - Ph - diagrams.

With this calculation option you can easily draw simple diagrams with only an element and H2O as well as more complicated diagrams with several elements.

The dotted cyan lines indicate the stability area of water. Stability regions of ions can be outlined with blue lines, if necessary. Concentrations of the elements as well as scale settings can be changed by pressing the Menu button.

High-resolution paper copies can be produced by pressing Print BW or Print Col buttons, as with the other calculation options.

Eh - pH - Diagrams.pdf

HSC Eh-pH 1.gif

HSC Eh-pH 2.gif