The role of chemical order in the temperature and composition dependence of the viscosity of liquid alloys
| Autor: | Nadège Meyer, Jean-François Wax, Hong Xu |
|---|---|
| Přispěvatelé: | Laboratoire de Chimie et Physique - Approche Multi-échelle des Milieux Complexes (LCP-A2MC), Université de Lorraine (UL) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
010304 chemical physics Composition dependence General Physics and Astronomy Thermodynamics 010402 general chemistry 01 natural sciences 0104 chemical sciences Viscosity Molecular dynamics Order (biology) 0103 physical sciences Physical and Theoretical Chemistry [PHYS.COND.CM-SCM]Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft] ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Journal of Chemical Physics Journal of Chemical Physics, American Institute of Physics, 2019, 150 (17), pp.174502. ⟨10.1063/1.5092694⟩ |
| ISSN: | 0021-9606 1089-7690 |
| Popis: | The influence of the chemical order on the viscosity of liquid alloys is investigated by numerical simulation of molecular dynamics. The temperature and composition dependence is discussed in the case of two contrasting alloys: K-Cs and Li-Bi. These two mixtures have different chemical orders, the first one being random and the second one having strong heterocoordination tendencies. In the case of K-Cs, the behavior of the mixture vs temperature is similar to a pure system and its viscosity varies monotonically with the composition. It is not the case for Li-Bi due to its marked chemical order and the heterocoordination tendency is accompanied by a maximum of the viscosity of the mixture when the composition is changed. For the first time, estimates of the temperature dependence of the viscosity of three representative Li-Bi alloys are given. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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