Details

Autor(en) / Beteiligte

• Tessier, F
• Navrotsky, A
• Niewa, R
• Leineweber, A
• Jacobs, H
• Kikkawa, S
• Takahashi, M
• Kanamaru, F
• DiSalvo, F.J

Titel

Energetics of binary iron nitrides

Ist Teil von

• Solid state sciences, 2000-06, Vol.2 (4), p.457-462

Ort / Verlag

Paris: Elsevier Masson SAS

Erscheinungsjahr

2000

Quelle

Elsevier Journal Backfiles on ScienceDirect (DFG Nationallizenzen)

Beschreibungen/Notizen

• High-temperature solution calorimetry in molten sodium molybdate 3Na 2O·4MoO 3 was used to determine the energetics of formation of a series of binary iron nitrides: γ′-Fe 4N, ε-Fe 3N 1+ y ( y=0, 0.10, 0.22, 0.30, 0.33), ζ-Fe 2N and γ′′-FeN 0.91. The linear relation Δ H° f (FeN x )=−65.23 x+13.48 kJ mol −1 was found between the enthalpies of formation from the elements at 298 K of iron nitrides FeN x and their nitrogen content x. Using this linear approximation, the enthalpy of formation of α′′-Fe 16N 2 has been estimated to Δ H° f (Fe 16N 2)=85.2±46.8 kJ mol −1.