Searched for: subject%3A%22Surface%255C+segregation%22
(1 - 6 of 6)
document
Ferrari, A. (author), Körmann, F.H.W. (author)
Besides revealing excellent mechanical properties, compositionally complex alloys are also very promising candidates for applications in heterogeneous catalysis. The opportunity provided by the tremendously large composition phase space to explore new materials and tune the materials properties in the materials design cycle is, however,...
journal article 2021
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Zhao, M. (author), Brouwer, J.C. (author), Sloof, W.G. (author), Bottger, A.J. (author)
Ternary alloys have been developed for a wide range of applications and surface segregation of ternary alloys has a decisive impact on their performance. Different from binary alloys, in which surface energy is usually the dominant factor, the interaction between solute elements has a noticeable effect on the surface segregation behavior of...
journal article 2020
document
Zhao, M. (author), Brouwer, J.C. (author), Sloof, W.G. (author), Bottger, A.J. (author)
Pd–Cu alloys have been investigated as promising candidates for hydrogen separation membranes. Surface segregation influences the long-term performance of these membranes since their catalytic effect is mainly controlled by the surface composition. In the present research, surface segregation of Pd-40 at.% Cu alloy in vacuum and various gas...
journal article 2020
document
Ferrari, A. (author), Körmann, F.H.W. (author)
The reactivity of the surface of multicomponent metals such as High Entropy Alloys (HEAs) is rapidly gaining importance for corrosion and catalytic applications, but the mechanisms of surface segregation in these complex materials are poorly understood. Here we investigate with ab initio calculations the segregation thermodynamics in the...
journal article 2020
document
Zhao, M. (author), Sloof, W.G. (author), Bottger, A.J. (author)
Surface segregation of a series of forty Palladium-based binary alloys has been investigated using a thermodynamic model based on an atom exchange approach. Their surface segregation behaviour, both in vacuum and in gas environments, were comprehensively estimated. The calculated results are in good agreement with the available experimental...
journal article 2018
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Popadic, M. (author), Scholtes, T.L.M. (author), De Boer, W. (author), Sarubbi, F. (author), Nanver, L.K. (author)
An empirical model of As surface segregation during reduced-pressure chemical vapor deposition Si epitaxy is presented. This segregation mechanism determines the resulting doping profile in the grown layer and is here described by a model of simultaneous and independent As adsorption and segregation versus incorporation. The model quantifies...
journal article 2009
Searched for: subject%3A%22Surface%255C+segregation%22
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