Study of melt-grown quasicrystalline samples in the Cd-Yb and Al-Cu-Fe systems
- Russian Research Centre Kurchatov Institute (Russian Federation)
- Moscow State Institute of Steel and Alloys (Russian Federation)
The regimes of preparation of bulk samples of the quasicrystalline phase in the Cd-Yb and Al-Cu-Fe systems have been investigated. A thermodynamically stable quasicrystalline phase Cd{sub 5.7}Yb and its approximant Cd{sub 6}Yb with a high degree of texture along the cooling axis have been obtained. X-ray diffraction analysis made it possible to reveal changes in the structure and phase composition of bulk samples with variation in the melting temperature and annealing for different methods of sample preparation. It is shown that the presence of a temperature gradient along the furnace axis significantly affects the volume of the quasicrystalline phase. It is established that, with a decrease in the volume of the quasicrystalline phase mixed with the crystalline phase, the character of the temperature dependence of resistivity changes from the semiconductor type to the metallic type and the microhardness decreases according to a linear law.
- OSTI ID:
- 21090723
- Journal Information:
- Crystallography Reports, Vol. 52, Issue 6; Other Information: DOI: 10.1134/S1063774507060107; Copyright (c) 2007 Nauka/Interperiodica; Article Copyright (c) 2007 Pleiades Publishing, Inc; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7745
- Country of Publication:
- United States
- Language:
- English
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