Fig. 1
From: Study on passivation mechanism of HRB500E rebar in highly alkaline concrete pore solution
Thermodynamic equilibrium diagram. (a) Phase equilibrium, (b) Ferrite, (c) Cementite, (d) M2O3, (e) MN and (f) M (C, N). Note: M is alloy element (such as Cr, Nb, V, Ti, etc.).
