Fig. 9: Concentration diagram indicating stability of the main phases in the altered glass/iron/claystone system at 50 °C. | npj Materials Degradation

Fig. 9: Concentration diagram indicating stability of the main phases in the altered glass/iron/claystone system at 50 °C.

From: The fate of Si and Fe while nuclear glass alters with steel and clay

Fig. 9

Eh = −0.14 V vs. SHE and pH = 6.86 at atmospheric pressure. In blue dissolved species, and in yellow stability domains of nontronite and amorphous silica (SiO2(am)). Blue lines present initial concentration of Fe and H4SiO4 in solution. Red line shows the concentration of H4SiO4 estimated in solution from Fig. 8b.

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