Click on Download
EpH Slide Show (pdf presentation - 30 pages) for detailed
information on the EpH Module.
enables you to generate isothermal Eh vs. pH (Pourbaix)
diagrams for one-, two or three-metal systems using data
retrieved from the compound databases that also include
infinitely dilute aqueous data. Note: EpH
only accesses compound databases - the aqueous phase is
treated as an ideal solution.
Figs. 2 to
4 show the input and resulting Eh-pH diagram for the Cu-water
5 and 6 show how to generate a ‘two-metal’
Eh-pH diagram for the Cu-As-water system. Since the stabilities
of the Cu and As mixed compounds (Cu3(AsO4)2(s) and Cu3As(s))
depend upon the relative amounts of Cu and As, it is also
necessary to define the range of the metal mole fraction
R, As / (As + Cu).
calculated diagrams can be stored as figure (*.fig) files,
edited by the Figure
module, and exported as *.bmp, *.emf and *.wmf files.
also enables you list the coordinates all the invariant
points as well as perform detailed equilibrium calculations
at any point on the diagram. You can also calculate diagrams
under constant partial gas pressures.