Effect of Cold-Sintering Parameters on Structure, Density, and Topology of Fe–Cu Nanocomposites
| Autor: | Irena Gotman, Marat Lerner, Aleksandr Pervikov, E. A. Grachev, Dmitriy Ivonin, Alexey A. Tsukanov, Elazar Y. Gutmanas |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
property prediction
Materials science internal structure Sintering Nanoparticle 02 engineering and technology minkowski functionals Topology 01 natural sciences lcsh:Technology Article computer-aided design fe–cu nanocomposite 0103 physical sciences Minkowski space General Materials Science Porosity cold sintering lcsh:Microscopy Nanoscopic scale Bimetallic strip computer modeling lcsh:QC120-168.85 010302 applied physics bimetallic nanoparticles Nanocomposite Consolidation (soil) lcsh:QH201-278.5 lcsh:T 021001 nanoscience & nanotechnology high pressure lcsh:TA1-2040 lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering 0210 nano-technology lcsh:Engineering (General). Civil engineering (General) lcsh:TK1-9971 |
| Zdroj: | Materials, Vol 13, Iss 3, p 541 (2020) Materials Volume 13 Issue 3 |
| ISSN: | 1996-1944 |
| Popis: | The design of advanced nanostructured materials with predetermined physical properties requires knowledge of the relationship between these properties and the internal structure of the material at the nanoscale, as well as the dependence of the internal structure on the production (synthesis) parameters. This work is the first report of computer-aided analysis of high pressure consolidation (cold sintering) of bimetallic nanoparticles of two immiscible (Fe and Cu) metals using the embedded atom method (EAM). A detailed study of the effect of cold sintering parameters on the internal structure and properties of bulk Fe&ndash Cu nanocomposites was conducted within the limitations of the numerical model. The variation of estimated density and bulk porosity as a function of Fe-to-Cu ratio and consolidation pressure was found in good agreement with the experimental data. For the first time, topological analysis using Minkowski functionals was applied to characterize the internal structure of a bimetallic nanocomposite. The dependence of topological invariants on input processing parameters was described for various components and structural phases. The model presented allows formalizing the relationship between the internal structure and properties of the studied nanocomposites. Based on the obtained topological invariants and Hadwiger&rsquo s theorem we propose a new tool for computer-aided design of bimetallic Fe&ndash Cu nanocomposites. |
| Databáze: | OpenAIRE |
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