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How can we Distinguish Quasicrystals from other Phases in Al-based Cast Alloys Containing Mn, Mg, Si, Be, Cu, Ce, Fe and Ti?

[ Vol. 8 , Issue. 2 ]

Author(s):

Bostjan Markoli, Tonica Boncina and Franc Zupanic   Pages 109 - 118 ( 10 )

Abstract:


Recognizing quasicrystals that are embedded in Al-based cast alloys is a challenging task. For this reason, we synthesized a series of multi-component, AlMn-based alloys that contain many icosahedral quasicrystals in addition to crystalline phases. We then conducted a thorough investigation in order to unambiguously distinguish the quasicrystalline phases from all the others. Numerous modern analytical techniques were employed for this, and our efforts proved to be successful. As a result, our newly developed, particle-extraction and surface-etching procedure has been successfully patented.

Keywords:

Cast alloys, dynamic deep etching, etching technique, icosahedral quasicrystals, particle extraction, quasicrystal determination.

Affiliation:

University of Ljubljana, Faculty of Natural Sciences and Engineering, Department of Materials and Metallurgy, Askerceva Cesta 12, 1000 Ljubljana, Slovenia.



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