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Designing amorphous/crystalline composites by liquid-liquid phase separation

Czél, Györgyné and Mizser-Tomolya, Kinga (2014) Designing amorphous/crystalline composites by liquid-liquid phase separation. MATERIALS SCIENCE FORUM, 790-79. pp. 473-478. ISSN 0255-5476

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Abstract

The Cu-Zr-Ag system is characterized by a miscibility gap. The liquid separates into Agrich and Cu-Zr rich liquids. Yttrium was added to the Cu-Zr-Ag and Cu-Zr-Ag-Al systems and its influence on liquid immiscibility was studied. This alloying element has been chosen to check the effect of the heat of mixing between silver and the given element. In the case of Ag-Y system it is highly negative (-29 kJ/mol). The liquid becomes immiscible in the Cu-Zr-Ag-Y system. To the effect of Y addition the quaternary liquid decomposed into Ag-Y rich and Cu-Zr rich liquids. The Y addition increased the field of miscibility gap. An amorphous/crystalline composite with 6 mm thickness has been successfully produced by liquid-liquid separation based on preliminary calculation of its composition. The matrix was Cu38Zr48Al6Ag8 and the crystalline phases were Ag-Y rich separate spherical droplets. © (2014) Trans Tech Publications, Switzerland.

Item Type: Article
Uncontrolled Keywords: RAPID SOLIDIFICATION; Microstructure; Liquid-liquid separation; composite; BULK METALLIC GLASSES
Subjects: Q Science / természettudomány > QD Chemistry / kémia
SWORD Depositor: MTMT SWORD
Depositing User: MTMT SWORD
Date Deposited: 27 May 2015 10:55
Last Modified: 27 May 2015 10:55
URI: http://real.mtak.hu/id/eprint/24338

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