COMPOSITIONAL CHANGES IN ALLOYS DURING ION-BOMBARDMENT AT ELEVATED-TEMPERATURES

Authors
SCKERL MW LAM NQ SIGMUND P
Citation
Mw. Sckerl et al., COMPOSITIONAL CHANGES IN ALLOYS DURING ION-BOMBARDMENT AT ELEVATED-TEMPERATURES, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 140(1-2), 1998, pp. 75-90
Citations number
42
Categorie Soggetti
Instument & Instrumentation","Nuclear Sciences & Tecnology","Physics, Atomic, Molecular & Chemical","Physics, Nuclear
Journal title
Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms → ACNP
ISSN journal
0168583X
Volume
140
Issue
1-2
Year of publication
1998
Pages
75 - 90
Database
ISI
SICI code
0168-583X(1998)140:1-2<75:CCIADI>2.0.ZU;2-V
Abstract
Near-surface compositional changes in alloys during ion bombardment ha ve been studied theoretically. The employed scheme operates with a sta ble target, and the effects of preferential sputtering, collisional mi xing, radiation-enhanced diffusion, and Gibbsian and radiation-induced segregation are allowed for. High-fluence composition profiles were d etermined directly from a nonlinear integro-differential equation, aft er insertion of feasible input, by means of an efficient iteration pro cedure developed recently. The dependence of the composition profile o n input parameters such as target temperature and defect mobility has been examined for Ni-Cu, Ni-Ge and Ni-Pd alloys and compared to experi mental results. (C) 1998 Elsevier Science B.V.