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Quasicrystals are a new class of materials produced by rapid solidification from the melt, where cooling rates are of the order of 1.0 E3 to 1.0 E6 K/sec. These materials exhibit non-crystallographic symmetries and a new type of atomic structure. Some of the resulting mechanical and physical properties differ from those of crystalline or amorphous materials. The characterisation of the quasicrystalline state was performed by X-ray diffraction, differential thermal analysis (DTA) and transmission and scanning electron microscopy (TEM, SEM). Several kinds of decagonal and isosahedral quasicrystals were synthesised by conventional solidification (arc-melting).

Additional information

Authors: ATHANASIOU N ET AL., JRC Karlsruhe (DE);POLITIS C, University of Patras, Engineering Science Department (GR)
Bibliographic Reference: Paper presented: 23. Journées des Actinides, Bühlerhöhe (DE), April 20-23, 1993
Availability: Available from (1) as Paper EN 37663 ORA
Record Number: 199311477 / Last updated on: 1994-11-28
Original language: en
Available languages: en