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Thermodynamic properties of the Al-Ni system.
Albany, OR: U.S. Department of the Interior, Bureau of Mines, RI 7993, 1975 Jan; :1-15
The Bureau of Mines studied thermodynamic properties of al-ni alloys containing 0.54 to 30.04 atomic percent nickel with the aid of the high-temperature galvanic cell Al(1) // Al+3 (AlCl3 in NaCl.KCl) // Al-Ni alloy (l or s). Activities of aluminum and nickel (compared with pure liquid metals as the standard state) show pronounced negative deviation from Raoult's law at 1,273 K. The properties deltaG, deltaGXS, deltaGideal, deltaGAl, deltaGXSAl, deltaGN1, and deltaGXSN1, have been derived from the experimental data and are summarized in tables and illustrations. At 1,127 K, the thermodynamic stability for the invariant three-phase equilibrium consisting of a saturated liquid, Al3Ni, and Al3Ni2 has been uniquely defined by an activity for aluminum of 0.751. A free energy of formation at 1,127 K of 7,940 cal/g-atom was derived for the compound Al3Ni.
Aluminum alloys; Nickel alloys; Thermodynamic properties; Intermetallics; Heat of formation; Free energy; Phase transformations; Chemical reactivity; Aluminum intermetallics; Nickel intermetallics
IH; Report of Investigations
NTIS Accession No.
Albany, OR: U.S. Department of the Interior, Bureau of Mines, RI 7993
Page last reviewed: November 26, 2021
Content source: National Institute for Occupational Safety and Health Education and Information Division