Study of ion bombardment-induced subsurface compositional modifications in Ni-Cu alloys at elevated temperatures by ion scattering spectroscopy

Journal Article · Sun Jan 01 04:00:00 EST 1984 · Mater. Res. Soc. Symp. Proc.; (United States)

OSTI ID:6545988

Lam, N Q; Hoff, H A; Wiedersich, H; Rehn, L E

Changes in the subsurface composition of Ni-40 at. % Cu alloys during 3-keV Ne/sup +/ bombardment at temperatures between 25 and 700/sup 0/C were studied by means of ion scattering spectroscopy. Both the time evolution of the composition in the surface atom layer during ion bombardment and subsurface concentration profiles after rapid specimen cooling to room temperature were measured as a function of temperature. Radiation-enhanced diffusion coefficients were derived from the effective altered-layer thicknesses obtained. A comparison of the experimental measurements with theoretical calculations based on a phenomenological model enabled the identification of processes and kinetics responsible for subsurface compositional modifications. 26 references, 4 figures.

• Research Organization: Argonne National Lab., IL
• OSTI ID: 6545988
• Journal Information: Mater. Res. Soc. Symp. Proc.; (United States), Journal Name: Mater. Res. Soc. Symp. Proc.; (United States) Vol. 27; ISSN MRSPD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360106* -- Metals & Alloys-- Radiation Effects
ALLOYS
CHARGED PARTICLES
CHEMICAL COMPOSITION
COPPER ALLOYS
DATA
DIFFUSION
DISTRIBUTION
ENERGY RANGE
EXPERIMENTAL DATA
INFORMATION
ION SPECTROSCOPY
IONS
KEV RANGE
KEV RANGE 01-10
KINETICS
LAYERS
NEON IONS
NICKEL ALLOYS
NUMERICAL DATA
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
SPATIAL DISTRIBUTION
SPECTROSCOPY
TEMPERATURE DEPENDENCE