The Fe-Ni (iron-nickel) system

Swartzendruber, L. J.; Itkin, V. P.; Alcock, C. B.

doi:10.1007/bf02649918

Cited by 328 publications

(170 citation statements)

References 140 publications

Supporting

Mentioning

140

Contrasting

Unclassified

Order By: Relevance

“…For the limonitic ore, the stoichiometric carbon requirement was 7.07 kg/ 100 kg of ore, while for the saprolitic ore it was 2.76 kg/100 kg of ore. O) [26] and metal phase (Fe-Ni) [27] have been derived from information in the literature and were included in the model. In the current saprolite model, the nickel oxide was assumed to potentially occur in two forms: NiO dissolved in pyroxene (NiO (py) );…”

Section: Thermodynamic Modellingmentioning

confidence: 99%

Thermodynamics of the Reduction Roasting of Nickeliferous Laterite Ores

Elliott¹,

Pickles²,

Forster³

2016

JMMCE

View full text Add to dashboard Cite

The global nickel sulphide resources are becoming more difficult to mine and, as a result, there is increasing interest in the current and future development of the oxidic nickel laterite deposits. In comparison to the sulphide ores, the nickel laterites cannot be readily upgraded by conventional means and growing attention is being focused on the development of new methods for processing these ores. In this paper, firstly, brief overviews of laterite ore mineralogy and the conventional techniques used to extract the nickel from both the limonitic and the saprolitic nickeliferous laterites are provided. Secondly, previous research on the thermodynamic modelling of the reduction of the laterites is discussed. Thirdly, an improved thermodynamic model is used to predict the equilibrium products arising from the solid state reduction of both the limonitic and the saprolitic ores. Based on these thermodynamic predictions, the reduction behaviors of the two ore types are compared in terms of nickel recovery and grade in the ferronickel product. The effects of reduction temperature, ore composition and carbon additions were studied. Finally, the results from the simulations are compared to the experimental data available in the literature.

show abstract

Section: Thermodynamic Modellingmentioning

confidence: 99%

Thermodynamics of the Reduction Roasting of Nickeliferous Laterite Ores

Elliott¹,

Pickles²,

Forster³

2016

JMMCE

View full text Add to dashboard Cite

show abstract

“…For instance, in the Fe-atoms' concentration region, 0.1 < c < 0.3, so-called Permalloys are formed. These soft magnetic materials characterized by fast processes of magnetic reversal can have atomic long-range-ordered L1 2 -Cu 3 Au-type (Ni 3 Fe) structure, near-zero magnetostriction and magnetic-anisotropy constants [1][2][3][4][5]. In a concentration region of Fe atoms, 0.45 < c < 0.55, Elinvars are formed (with atomic long-rangeordered L1 0 -CuAuI-type (NiFe) layered structure with temperature factor of electrical resistance possessing high values) [2].…”

Section: Introductionmentioning

confidence: 99%

Interatomic Interactions in F.C.C.-Ni–Fe Alloys

Bokoch

Tatarenko

2010

Usp. Fiz. Met.

View full text Add to dashboard Cite

Within the scope of the self-consistent-field (SCF) and mean-SCF (MSCF) approximations, static-concentration-waves and Matsubara-Kanzaki-Krivoglaz lattice statics methods, on the basis of state-of-the-art diffraction data concerning coherent and diffuse scattering of radiations in (dis)ordered f.c.c.-NiFe alloys for various composition-temperature regions, and on the basis of data of independent magnetic measurements, the regular parameterization and estimation of 'pair-wise' interatomic interactions of the various nature (namely, 'direct' short-range 'electrochemical' and magnetic contributions as well as indirect long-range 'strain-induced' interaction) have been carried out taking into account their concentration and temperature dependences. As shown unfortunately, many of available 'electrochemical' interaction parameters obtained with use of the well-known ab initio and semi-phenomenological computational methodologies are limited in their applications for the statisticalthermodynamic analysis of f.c.c.-Ni-Fe alloys because most of them are contrary to the regularities of a 'mixing'-energy symmetry and, as a result, to the symmetries of observed L1 2 -Ni 3 Fe-, L1 0 -NiFe-or L1 2 -Fe 3 Ni-type ordered phas- Fiz. Met. 2010, т. 11, сс. 413- The temperature dependence of total 'mixing' energy is mainly due to the significant temperature-dependent magnetic contribution to it, and there is no need to take into account the effects of both substitutional correlations between atoms and many-particle interatomic-force interactions for characterization of microstructures developed by atomic ordering and (or) solid-phase precipitation in f.c.c.-Ni-Fe alloys. As expected, within the scope of the MSCF approximation, the estimated energy parameters of 'exchange' interactions in 1 st coordination shell, J NiNi (r I ) and J NiFe (r I ), correspond to the ferromagnetic interaction between magnetic moments in Ni-Ni and Ni-Fe atomic pairs, and J FeFe (r I ) corresponds to the antiferromagnetic interaction between magnetic moments in Fe-Fe atomic pairs.У рамках наближень самоузгодженого (СУП) та середнього самоузгоджено-го (ССУП) полів, метод статичних концентраційних хвиль (СКХ) і статики ґратниці Мацубари-Канзакі-Кривоглаза, на основі сучасних дифракцій-них даних стосовно когерентного та дифузного розсіяння випромінення у (не)впорядкованих стопах ГЦК-Ni-Fe в широкій концентраційно-темпера-турній області, а також за даними незалежних магнетних мірянь виконано систематичну параметризацію та кількісний розрахунок енергій «парних» міжатомових взаємодій різної природи (а саме, «прямих» близькосяжних «електрохемічного» й магнетного внесків, а також непрямої далекосяжної «деформаційної» взаємодії) із врахуванням їх концентраційної і темпера-турної залежностей. Недвозначно показано, що більшість значень параме-трів «електрохемічних» взаємодій компонентів, наведених у спеціялізова-ній науковій літературі, яких було оцінено із застосуванням відомих «першопринципних» та напівфеноменологічних обчислювальних методо-логій, на жаль, не зад...

show abstract

“…% Fe undergo a chemical ordering transition at 517 C, where a low-temperature, chemically ordered L1 2 phase (AuCu 3 prototype) transforms to the hightemperature, chemically disordered A1 phase (Cu prototype). 3 Differences in vibrational entropy are thermodynamically important for order-disorder transitions especially at high temperatures. 4 The vibrational entropy is calculated from the phonon density of states (DOS).…”

mentioning

confidence: 99%

Phonon densities of states of face-centered-cubic Ni-Fe alloys

Lucas

Mauger

Muñoz

et al. 2013

Journal of Applied Physics

View full text Add to dashboard Cite

Inelastic neutron scattering and nuclear resonant inelastic x-ray scattering were used to determine the phonon densities of states of face-centered-cubic Ni-Fe alloys. Increasing Fe concentration results in an average softening of the phonon modes. Chemical ordering of the Ni0.72Fe0.28 alloy results in a reduction of the partial vibrational entropy of the Fe atoms but does not significantly change the partial vibrational entropy of the Ni atoms. Changes in the phonon densities of states with composition and chemical ordering are discussed and analyzed with a cluster expansion method.

show abstract

The Fe-Ni (iron-nickel) system

Cited by 328 publications

References 140 publications

Thermodynamics of the Reduction Roasting of Nickeliferous Laterite Ores

Thermodynamics of the Reduction Roasting of Nickeliferous Laterite Ores

Interatomic Interactions in F.C.C.-Ni–Fe Alloys

Phonon densities of states of face-centered-cubic Ni-Fe alloys

Contact Info

Product

Resources

About