TY - JOUR
T1 - Ion beam modifications of near-surface compositions in ternary alloys
AU - Lam, N. Q.
AU - Tang, S.
AU - Yacout, A. M.
AU - Rehn, L. E.
AU - Stubbins, J. F.
N1 - Funding Information:
* Work supported by the U.S. Department of Energy, BES-Materials Sciences, under Contract W-31-109-Eng-38,
PY - 1991/7/1
Y1 - 1991/7/1
N2 - Changes in the surface and subsurface compositions of ternary alloys during elevated-temperature sputtering with inert-gas ions were investigated. Theoretically, a comprehensive kinetic model which includes all the basic processes, such as preferential sputtering, displacement mixing, Gibbsian segregation, radiation-enhanced diffusion and radiation-induced segregation, was developed. This phenomenological approach enabled to predict the effects of each individual process or of a combination of processes on the compositional modification in model alloys. Experimentally, measurements of compositional changes at the surface of a Ag-(40 at.% Au)-(20 at.% Cu) alloy during 3 keV Ne+ bombardment at various temperatures were made, using ion scattering spectroscopy. These measurements were interpreted on the basis of the results of theoretical modeling.
AB - Changes in the surface and subsurface compositions of ternary alloys during elevated-temperature sputtering with inert-gas ions were investigated. Theoretically, a comprehensive kinetic model which includes all the basic processes, such as preferential sputtering, displacement mixing, Gibbsian segregation, radiation-enhanced diffusion and radiation-induced segregation, was developed. This phenomenological approach enabled to predict the effects of each individual process or of a combination of processes on the compositional modification in model alloys. Experimentally, measurements of compositional changes at the surface of a Ag-(40 at.% Au)-(20 at.% Cu) alloy during 3 keV Ne+ bombardment at various temperatures were made, using ion scattering spectroscopy. These measurements were interpreted on the basis of the results of theoretical modeling.
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U2 - 10.1016/0168-583X(91)95726-T
DO - 10.1016/0168-583X(91)95726-T
M3 - Article
AN - SCOPUS:44949273635
SN - 0168-583X
VL - 59-60
SP - 889
EP - 892
JO - Nuclear Inst. and Methods in Physics Research, B
JF - Nuclear Inst. and Methods in Physics Research, B
IS - PART 2
ER -