Enthalpies of formation of the Al–Ni intermetallic compounds

Chrifi‐Alaoui, F. Z.; Nassik, Mostafa; Mahdouk, K.; Gachon, J.C.

doi:10.1016/s0925-8388(03)00493-6

Cited by 62 publications

(26 citation statements)

References 21 publications

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“…1, reproduced from [5]). This observation seems to be consistent with the fact that the formation of this Ni 3 Al compound is thermodynamically favoured when considering the full reaction of a limited amount of Al with an ''infinite'' amount of Ni, that is our experimental situation (for Ni 0.75 Al 0.25 the molar enthalpy of formation is about À38 kJ/mol of atoms, whereas it is À57 kJ/mol of atoms for Ni 0.5 Al 0.5 [6,7]). Furthermore, the formation of Ni 3 Al from Al deposited on bulk Ni seems also to be crystallographically favoured since the lattice parameter of Ni 3 Al (a Ni 3 Al = 3.561 Å ) only differs by 1% from the one of Ni (a Ni = 3.524 Å ).…”

Section: Introductionsupporting

confidence: 88%

Growth of Ni–Al alloys on Ni(111), from Al deposits of various thicknesses: (II) Formation of NiAl over a Ni3Al interfacial layer

Schmaus

Cohen

2007

Surface Science

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Section: Introductionsupporting

confidence: 88%

Growth of Ni–Al alloys on Ni(111), from Al deposits of various thicknesses: (II) Formation of NiAl over a Ni3Al interfacial layer

Schmaus

Cohen

2007

Surface Science

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“…The same comparison has been also made for those typical intermetallic compounds in Al-Ni-Ce [41] in Table 3, and the similar agreement is observed. Table 4 compares the present results of Al-Ni-Y systems with experiments [44][45][46][47], showing an overall agreement. We can conclude that our approach from the combination of Miedema's and Toop's model is effective for predicting formation enthalpies and thermodynamic behaviors of Al-Ni-RE (Ce, La, Y) systems.…”

Section: Mixing Enthalpy Of Al-ni-re (Ce La Y) Ternary Alloyssupporting

confidence: 74%

Calculation of glass forming ranges in Al–Ni–RE (Ce, La, Y) ternary alloys and their sub-binaries based on Miedema's model

Sun

Liu

et al. 2010

Journal of Alloys and Compounds

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“…The enthalpy of formation that is used here is approximately in the middle of the reported values at about Ϫ65 kJ/mol. 6,26,27 The last contribution to the enthalpy of the products results from the change in surface energy due to the reduced total surface area of the combined nanoparticle. 28 The contribution to the change in system energy from the change in surface area is given as 30 The surface area of the sintered NiAl nanoparticles is 50.77, 137.18, and 480.25 nm 2 for the 3, 5, and 10 nm nanoparticle cases, respectively.…”

Section: Thermodynamic Analysis Of Separate Nanoparticlesmentioning

confidence: 99%

Molecular dynamics simulation of the energetic reaction between Ni and Al nanoparticles

Henz

Hawa

Zachariah

2009

Journal of Applied Physics

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Molecular dynamics simulations are used to simulate the energetic reaction of Ni and Al particles at the nanometer scale. The effect of particle size on reaction time and temperature for separate nanoparticles has been considered as a model system for a powder metallurgy system. Coated nanoparticles in the form of Ni-coated Al nanoparticles and Al-coated Ni nanoparticles are also analyzed as a model for nanoparticles embedded within a matrix. The differences in melting temperature and phase change behavior, e.g., the volumetric expansion of Al between Al and Ni, are expected to produce differing results for the coated nanoparticle systems. For instance, the volumetric expansion of Al upon melting is expected to produce large tensile stresses and possibly rupture in the Ni shell for Ni-coated Al. Simulation results show that the sintering time for separate and coated nanoparticles is nearly linearly dependent on the number of atoms or volume of the sintering nanoparticles. We have also found that nanoparticle size and surface energy are important factors in determining the adiabatic reaction temperature for both systems at nanoparticle sizes of less than 10 nm in diameter.

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Enthalpies of formation of the Al–Ni intermetallic compounds

Cited by 62 publications

References 21 publications

Growth of Ni–Al alloys on Ni(111), from Al deposits of various thicknesses: (II) Formation of NiAl over a Ni3Al interfacial layer

Growth of Ni–Al alloys on Ni(111), from Al deposits of various thicknesses: (II) Formation of NiAl over a Ni3Al interfacial layer

Calculation of glass forming ranges in Al–Ni–RE (Ce, La, Y) ternary alloys and their sub-binaries based on Miedema's model

Molecular dynamics simulation of the energetic reaction between Ni and Al nanoparticles

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