Dresden 2003 – wissenschaftliches Programm

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M: Metallphysik

M 8: Quasikristalle II

M 8.1: Vortrag

Montag, 24. März 2003, 11:45–12:00, IFW B

An investigation of the Al-rich region of the Al-Pd-Re alloy system — •Sergiy Balanetskyy1,2 and Benjamin Grushko11IFF, Forschungszentrum Juelich, D-52425 Juelich, Germany — 2I.N. Frantsevich Institute for Problems of Materials Science, 03680 Kiev 142, Ukraine

The Al-Pd-Re icosahedral (I) phase is of a great interest as a model material for the study of physical properties of quasicrystals. However its formation conditions are not sufficiently well known. Preliminary results on the investigation of the Al-Pd-Re alloy system in the vicinity of the I-phase are presented. The study is based on the recently updated binary Al-Pd and Al-Re phases diagrams. The alloys inside the Al-Al11Re4-Al3Pd2 compositional range were studied between 750 and 1000C by scanning and transmission electron microscopy, powder X-ray diffraction and differential thermal analysis. The results are compared to those obtained in the corresponding range of Al-Pd-Mn (Mn and Re belong to the same column in the periodic table).

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