Fig. 3
From: Study on passivation mechanism of HRB500E rebar in highly alkaline concrete pore solution
Morphology and elemental composition of typical inclusion. (a) MnS, (b) calcium silicoaluminate, (c) Al2O3, (d) and (e) silicoaluminate and MnS composite inclusions, (f) Composite inclusions of (Nb, V, Ti) N and MnS wrapped around Al2O3.
