Solid-state amorphization, interdiffusion and ion-beam mixing in Au/Zr and Ni/Zr

Journal Article · Wed Nov 01 04:00:00 EST 1989 · Journal of Materials Research; (USA)

DOI:https://doi.org/10.1557/JMR.1989.1444· OSTI ID:5120511

Ding, F; Okamoto, P R; Rehn, L E ^[1]

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1. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (CN)

Inert-gas markers, Rutherford backscattering and x-ray diffraction were used to investigate solid-state interdiffusion in Ni/Zr and Au/Zr bilayer films as a function of temperature; microstructural studies during annealing were performed {ital in} {ital situ}, in a high-voltage electron microscope. Au, in contrast to Ni, is not an anomalously fast diffuser in crystalline Zr. Nevertheless, an amorphous product phase was found in both alloy systems for reaction temperatures {le}550 K; heterogeneous nucleation of the amorphous phase was observed in Au/Zr. The interdiffusion data reveal two distinct Arrhenius regimes, 330--{similar to}470 K and {similar to}480 to 550 K, with quite different apparent activation enthalpies. These thermal interdiffusion results are compared with temperature dependent studies of ion-beam mixing in similar bilayer specimens. This comparison indicates that the enhanced efficiencies observed for ion-beam mixing above {similar to}480 K result from the as-prepared metastable microstructure, and are not due to radiation-enhanced diffusion.

• OSTI ID: 5120511
• Journal Information: Journal of Materials Research; (USA), Journal Name: Journal of Materials Research; (USA) Vol. 4:6; ISSN JMREE; ISSN 0884-2914
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ACTIVATION ENERGY
AMORPHOUS STATE
ANNEALING
BEAMS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COHERENT SCATTERING
CRYSTAL STRUCTURE
DIFFRACTION
DIFFUSION
ELASTIC SCATTERING
ELECTRON MICROSCOPES
ELEMENTS
ENERGY
ENTHALPY
FILMS
GOLD
HEAT TREATMENTS
HIGH TEMPERATURE
IN-SITU PROCESSING
INTERFACES
ION BEAMS
METALS
MICROSCOPES
MICROSTRUCTURE
MIXING
NICKEL
NUCLEATION
PHYSICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
PROCESSING
RADIATION EFFECTS
RUTHERFORD SCATTERING
SCATTERING
SOLIDS
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
THIN FILMS
TRANSITION ELEMENTS
X-RAY DIFFRACTION
ZIRCONIUM