Simulation of the Electrical Resistivity of an Ag–ZnO Electrocontact Composite Material
| Autor: | N. S. Nikolaeva, M. Yu. Kuchinskii, A. A. P’yanzin, Galina M. Zeer, E. G. Zelenkova, R. K. Zelenkov, N. A. Kolbasina |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
020502 materials Metals and Alloys chemistry.chemical_element 02 engineering and technology Zinc Microstructure Finite element method Complex geometry 0205 materials engineering chemistry Electrical resistivity and conductivity Powder metallurgy Boundary value problem Composite material Lattice model (physics) |
| Zdroj: | Russian Metallurgy (Metally). 2021:62-67 |
| ISSN: | 1555-6255 0036-0295 |
| DOI: | 10.1134/s0036029521010109 |
| Popis: | Samples of an electrocontact composite material (CM) based on silver and reinforced with a zinc oxide nanopowder in an amount of 2–10 wt % are prepared by powder metallurgy. The microstructure of the CM samples is studied by electron microscopy and their electrical resistivity is determined. The mathematical simulation of the electrical resistivity was performed using the lattice model of an Ag–ZnO powder CM. To bring the structure of the finite element model to the structure of real electrocontact CM samples, which have with more complex geometry, as close as possible, we developed a program to automate the processes of constructing a finite element model of CM, applying boundary conditions, and solving and displaying results. To verify the generated CM model, we estimated the electrical resistivity of the lattice model CM for various nonconducting-component volumes in comparison with an analytical calculation and experimental results. |
| Databáze: | OpenAIRE |
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