Investigation of Mild Steel Corrosion in the Cement Production Associated with the Usage of Secondary Fuels

Table 3

Compiled results for Möβbauer-derived phase compositions of the samples M12/2, upper and lower fractions, and M18/1, integral fraction, along with the fit-based quantification. : isomer shift; : electric quadrupole split; : magnetic hyperfine field.

Sample	Component	(mm/s)	(mm/s)	(T)	Phase	Fraction (%)
M12/2 upper CP fraction	Doublet I	0.39	0.69		β- or γ-FeOOH	5
	Doublet II	1.10	2.98		Mica	2
	Sextet I	0.37	-0.11	51	α-Fe2O3	93
M12/2 lower CP fraction	Doublet I	0.39	0.69		β- or γ-FeOOH	23
	Doublet II	1.10	2.98		Mica	2.5
	Sextet I	0.39	-0.11	51	Fe2O3	20
	Sextet II	0.26		49	Fe3O4	18.5
	Sextet III	0.66		45.5
	Sextet IV	0.38	-0.13	38	α-FeOOH	36
M18/1 integrated fraction	Doublet I	0.39	0.59		β- or γ-FeOOH	10
	Doublet II	1.10	2.98		Mica	3
	Sextet I	0.26		49.5	Fe3O4	47
	Sextet II	0.67		46.0
	Sextet III	0.38	-0.13	38	α-FeOOH	40.5