Nonequilibrium alloy formation in the immiscible Cu-Mo system studied by thermodynamic calculation and ion beam mixing

Journal Article · Fri Oct 15 04:00:00 EDT 2010 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3483953· OSTI ID:21476515

Bai, X; Wang, T L; Ding, N; Li, J H; Liu, B X ^[1]

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1. Department of Materials Science and Engineering, Advanced Materials Laboratory, Tsinghua University, Beijing 100084 (China)

For the equilibrium immiscible Cu-Mo system characterized by a positive heat of formation (+19 kJ mol{sup -1}), thermodynamic calculation showed that by adding an adequate interfacial free energy, the Gibbs free energy of the Cu-Mo multilayered films could be elevated up to a higher level than the convex-shaped free energy curve of the amorphous phase and supersaturated solid solutions. Accordingly, ion beam mixing of the Cu-Mo multilayered samples did result in forming a unique amorphous phase with an alloy composition around 80 at. % Mo and two supersaturated solid solutions of fcc and bcc structures at around 27 at. % and 90 at. % Mo, respectively, matching well with the thermodynamic calculation.

• OSTI ID: 21476515
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 7 Vol. 108; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALLOYS
AMORPHOUS STATE
BCC LATTICES
BEAMS
COPPER ALLOYS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CUBIC LATTICES
DISPERSIONS
ENERGY
ENTHALPY
FCC LATTICES
FILMS
FORMATION HEAT
FREE ENERGY
FREE ENTHALPY
HOMOGENEOUS MIXTURES
ION BEAMS
LAYERS
MIXTURES
MOLYBDENUM ALLOYS
PHYSICAL PROPERTIES
REACTION HEAT
SOLID SOLUTIONS
SOLUBILITY
SOLUTIONS
SURFACE ENERGY
SURFACE PROPERTIES
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT ALLOYS