Interdiffusion and grain-boundary migration in Au-Cu bilayers during ion-irradiation

Conference · Fri Nov 01 00:00:00 EST 1991

OSTI ID:6025541

Alexander, D E; Rehn, L E; Baldo, P M

Ion irradiation and annealing experiments have been conducted on Au/Cu bilayer films to evaluate the effect of irradiation on diffusion-induced grain boundary migration (DIGM). The Au films were prepared with a large-grained microstructure with grain boundaries perpendicular to the film surface and extending through the film thickness. Irradiations were conducted with 1.5 MeV Kr at 228{degree}C. Rutherford backscattering spectrometry of the samples revealed that interdiffusion was substantially enhanced in the irradiated area relative to the unirradiated area. Both irradiated and annealed-only areas were characterized by a nearly uniform composition of 14 at.% and 7 at.% Cu respectively through the entire thickness of the underlying Au film. Small probe X-ray energy dispersive spectroscopy showed significant lateral compositional homogeneities in both irradiated and annealed areas. These two results are consistent with previous observations of DIGM in the Au/Cu system, suggesting that this previously unexamined mechanism contributes to ion beam mixing.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6025541
• Report Number(s): ANL/CP-73625; CONF-911202-19; ON: DE92005238
• Resource Relation: Conference: Annual fall meeting of the Materials Research Society, Boston, MA (United States), 2-6 Dec 1991
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER
PHYSICAL RADIATION EFFECTS
GOLD
INTERFACES
MIXING
GRAIN BOUNDARIES
KRYPTON IONS
LAYERS
MICROSTRUCTURE
CHARGED PARTICLES
CRYSTAL STRUCTURE
ELEMENTS
IONS
METALS
RADIATION EFFECTS
TRANSITION ELEMENTS
360101* - Metals & Alloys- Preparation & Fabrication
360106 - Metals & Alloys- Radiation Effects
360102 - Metals & Alloys- Structure & Phase Studies