Journal ArticleDOI
Thermodynamics and phase diagram of the Fe-C system
TLDR
A critical review of published data provides a fairly accurate knowledge of the thermodynamic properties of all of the phases of the system Fe-C that are stable or metastable at atmospheric pressure as discussed by the authors.Abstract:
A critical review of published data provides a fairly accurate knowledge of the thermodynamic properties of all of the phases of the system Fe-C that are stable or metastable at atmospheric pressure. Selected data are shown as tables and equations. A proposed phase diagram differs only slightly from others recently published but has the following features. Peritectic compositions and the α-γ equilibrium are shown to agree with measured values of the activity of iron in the solid and liquid solutions and the thermodynamic properties of pure iron. Of all the reported carbides of iron only two may be studied under equilibrium conditions. The solubilities of cementite and of χ-carbide in α-Fe are deduced from measured equilibria. Both are metastable at all temperatures with respect to graphite and its saturated solution in iron. The χ-carbide becomes more stable than cementite below about 230° Certain published data on e-carbide permit an estimate of its free energy as a precipitate during the aging process.read more
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Book ChapterDOI
Aluminium – Iron – Hydrogen
TL;DR: In this paper, the main experimental results are gathered in Table 1 and Table 2 and the main results of the main experiments are summarized in Table 3 and Table 4, respectively, and Table 5 and Table 6 are presented.
Journal ArticleDOI
Reassessment of low-temperature Gibbs energies of BCC and FCC in steel for T0-temperature evaluation
Journal ArticleDOI
A novel fused metal anode solid electrolyte fuel cell for direct coal gasification: a steady-state model [Erratum to document cited in CA111(12):100114u]
TL;DR: Yentekakis et al. as mentioned in this paper proposed a fused metal anode solid electrolyte fuel cell for direct coal gasification, which is a steady-state model based on the steady state model proposed in this paper.
Book ChapterDOI
Carbon – Iron – Hydrogen
TL;DR: In this paper, the main experimental results are gathered in Table 1 and Table 2 for the effects of hydrogen on the mechanical properties of steels in the presence of H. Most of the investigations have been directed towards the solubility of H in ferrite, austenite and liquid alloys.
Journal ArticleDOI
Kinetics of reactions between magnetite and carbon monoxide between 723 and 823 K
TL;DR: In this article, the surface reaction kinetics of carbon monoxide and magnetite were investigated between 723 and 823 K. Gas-phase mass-transfer effects within and near the porous samples and surface-reaction kinetics were considered.
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