The Modifications of the Carbide, Fe₂C; Their Properties and Identification

Study of carbon encapsulated iron oxide/iron carbide nanocomposite for hyperthermia

“…In addition, there is an obvious change in slope at 400 1C which represents the Tc for Fe 2 C phase [19]. A significant and clear drop at 585 1C corresponding to Fe 3 O 4 phase supports XRD data.…”

Microstructural and Dilatational Changes during Tempering and Tempering Kinetics in Martensitic Medium-Carbon Steel

“…The selected-area diffraction (SAD) pattern taken along [0001] e zone axis in Figures 4(c) and (d) indicates the particles to be transition e-carbides. [29] Therefore, the slope change occurring at the lower temperatures is confirmed to be stage 1 tempering.…”

“…[31] The chemical composition of h-carbide (cementite) is well known as Fe 3 C. [32,33] However, the chemical composition of e-carbide is reported to be slightly different (Fe 2~3 C). [29,34,35] Jack found that the chemical composition of e-carbide is nearer to Fe 3 C than Fe 2 C by XRD. [34] Thus, in this study, the chemical composition of e-carbide is considered to be Fe 3 C.…”

Results of further X-ray structural investigations of the iron–carbon and iron–nitrogen systems and of related interstitial alloys

“…New X-ray observations now give direct evidence that the loss of tetragonality of martensite during the first tempering stage is due to the precipitation of a close-packed hexagonal iron carbide which it is proposed should be named e-iron carbide, or e-Fe3C, because of its structural similarity with e-Fe3N, e-Iron carbide is formed as a coherent transitional phase in which the Laue condition for X-ray reflexion is obeyed preferentially in a direction normal to the (101) (Jack, 1948 b) at their lower interstitial-atom concentration limit, Fea(C,N ). A similar iron carbide, Fe2C, has been described by Hofer, Cohn & Peebles (1949) as the carbonrich extreme of the same carbonitride series at its upper interstitial-atom concentration limit, F%(C, N).…”