Hi

Suggested reading following doc.

Prefered References:

1. Marcel Pourbaix,Atlas of Electrochemical Equilibria in Aqueous Solutions

, translated from the French by James A. Franklin , 2nd English editionational Association of Corro- sion Engineers, Houston, Texas, and Centre Belge d ’ Etude de la Corrosion (CEBEL-COR) , Brussels, Belgium , 1974

2.W. T.Thompson, M. H.Kaye, C. W.Bale, and A. D.Pelton

, Pourbaix diagrams for multiele-ment systems , inUhlig ’  s Corrosion Handbook, 2nd edition , R. W. Revie , editor, Wiley , New York , 2000 , pp. 125 – 136

3.E. D.Verink, Jr. , Simplified procedure for constructing Pourbaix diagrams , inUhlig ’  s Corrosion Handbook, 2nd edition , R. W. Revie , editor, Wiley , New York , 2000 , pp. 111 – 124 .

thanks & regards,

g.sudhakar

phd(materials engineeing)

h.c.u

Thermodynamic tools to calculate Pourbaix (Eh-pH) diagrams exist and can be quite useful. They are based on Gibbs free energy calculations. Two commercial tools that come to mind include Thermocalc and FactSage. There are also free tools available, but I have not used them. Since superalloys are almost always 4+ element multicomponent systems, Thermocalc might be the more applicable. Complete data for all the element systems does not yet exist so results should be viewed as a guide rather than exact solutions for many theoretical systems. Remember as you add elements you are adding complexity to your diagram. This can result in difficult interpretations of the results. I have gotten useful results in the past. Good luck.

Joe Tylczak thanks for the reply. Could you name some of free resources.