Phase equilibria and structural investigations in the Ni-poor part of the system Al-Ge-Ni.

ABSTRACT: The ternary phase diagram Al-Ge-Ni was investigated between 0 and 50 at.% Ni by a combination of differential thermal analysis (DTA), powder- and single-crystal X-ray diffraction (XRD), metallography and electron probe microanalysis (EPMA). Ternary phase equilibria and accurate phase compositions of the equilibrium phases were determined within two partial isothermal sections at 400 and 700 °C, respectively. The two binary intermediate phases AlNi and Al₃Ni₂ were found to form extended solid solutions with Ge in the ternary. Three new ternary phases were found to exist in the Ni-poor part of the phase diagram which were designated as τ₁ (oC24, CoGe₂-type), τ₂ (at approximately Al_67.5Ge_18.0Ni_14.5) and τ<

SUBMITTER: Reichmann TL 

PROVIDER: S-EPMC4819023 | biostudies-literature | 2012 Sep

REPOSITORIES: biostudies-literature