Pourbaix diagram


Also found in: Wikipedia.

Pourbaix diagram

[¦pu̇r‚bā ′dī·ə‚gram]
(metallurgy)
A plot of potential versus pH used to predict the thermodynamic tendency of a metal to corrode.
References in periodicals archive ?
Pourbaix diagram is a graphical representation of the thermodynamic equilibrium of a metal--electrolyte, commonly aqueous solutions, in which the axes represents potential of the metal (electrode) and pH of the aqueous solution.
The potential and pH at final day of both fly ash and kaolin based- geopolymer system and Portland cement concrete were plotted on Pourbaix diagram [20] to determine the corrosion condition of the steel reinforcement and the plot is presented in Table 8.
Known as the Pourbaix diagram, the plot shows several important regions of non-corrosion, slow corrosion, rapid corrosion and hydrogen gas evolution.