中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 12 No. 4 August 2002 |
Al-Ni-Y system
（1. Thermal Processing Technology Center, Illinois Institute of Technology,
10W 32nd St, Chicago, IL, 60616, USA;
2. James Franck Institute, University of Chicago, 5640S Ellis Ave,
Chicago, IL, 60637, USA）
Abstract:The enthalpies of formation of the ternary compounds Al4NiY, Al2NiY, Al2Ni6Y3, Al16Ni3Y, AlNiY, Al3Ni2Y, AlNi8Y3, Al7Ni3Y2, and of the binary compounds Al2Y containing nickel and Ni5Y containing aluminum have been determined by high temperature reaction calorimetry. The enthalpy values measured are compared to previously published results where available as well as extended Miedema model predict ions. The melting points of the compounds were determined by DTA and X-ray diffraction was used to confirm the crystal structures of the compounds. The enthalpies of formation of the ternary compounds show a maximum along the 50%Al (mole fraction) section. The ternary compounds appear along lines of constant yttrium content consistent with binary compound solubility extensions.
Key words: enthalpy of formation; compound; Al-Ni-Y system
