Journal Article

PreJuSER-9714

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Phase separation in Ni-Nb-Y metallic glasses

Mattern, N. ; Gemming, T. ; Thomas, J. ; Goerigk, G.FZJ* ; Franz, H. ; Eckert, J.

2010
Elsevier Lausanne

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Please use a persistent id in citations: doi:10.1016/j.jallcom.2009.10.013

Abstract: The ternary system Ni-Nb-Y exhibits an extended miscibility gap in the equilibrium liquid The decomposition of the liquid can be used to prepare phase-separated Ni-Nb-Y glasses by means of rapid quenching of the melt Phase separation and structure formation take place during quenching in the undercooled liquid The temperature dependence of the critical temperature of liquid-liquid phase separation T-C determines essentially the quenched in microstructures For Ni contents <60 at.% coarsened hierarchical microstructures of two-phase glasses are formed For Ni contents >60 at % early stages of decomposition are obtained with correlation lengths in the nanometer-range. In situ small angle X-ray scattering at elevated temperatures gives evidence of the spinodal character of the decomposition. (C) 2009 Elsevier B.V. All rights reserved.

Keyword(s): J ; Metallic glasses (auto) ; Phase separation (auto) ; Spinodal decomposition (auto) ; Small angle X-ray scattering (auto)

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Streumethoden (IFF-4)
2. Neutronenstreuung (IFF-5)
3. JCNS (Jülich Centre for Neutron Science JCNS (JCNS) ; JCNS)

Research Program(s):

1. BioSoft: Makromolekulare Systeme und biologische Informationsverarbeitung (P45)
2. Großgeräte für die Forschung mit Photonen, Neutronen und Ionen (PNI) (P55)

Appears in the scientific report 2010

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