Table 5: Results on XRD qualitative analysis of nonadherent rusts (NARs) formed for 56-day exposure in 3.5% NaCl solution according to the internal standard method.

AlloysPhase fraction (wt.%)
GoethiteAkaganeiteLepidocrociteSpinel oxideHematiteTotal

REF0.20.010.84.77.421.1
18Mn1.00.09.95.34.020.2
18Mn5Cr4.20.010.30.34.619.4

Magnetite or maghemite.