Figure 10

High resolution XPS spectrum of (a) Cl 2p, (b) C 1 s, (c) Ca 2p, (d) N 1 s (e) O 1 s and (f) Fe 2p after immersing the reinforcing steel for 24 h in SCP solution containing 3.5 wt.% NaCl in existence of 50 μmol L⁻¹ of BTC corrosion inhibitor at pH Σ12.5.