Characterization of the microstructural features and the rust layers of an archaeological iron sword in the Egyptian Museum in Cairo (380–500 A.D.)

Heritage Science

Table 2 The results of micro-Raman analysis

Analysis area	The layer	Raman peaks cm^-1	Phase	References
Gray corrosion phase	TM	388, 299, 549, 646	Goethite	[43,44,45]
Light yellow corrosion	DPL	666, 300	Magnetite	[20, 35, 40,41,42]
Light marbling corrosion	DPL	720, 319, 400, 720, 664	Akaganeite, Maghemite	[43, 44]
Orange corrosion zone	DPL	398, 139, 209, 338, 1312	Lepidocrocite	[44]