Work

Drastic reduction of thermal conductivity of porous metal due to closed loops on electron trajectories

Year: 2025

Type: article

Abstract: The dependence of the electronic component of thermal conductivity in a porous metal on the concentration of spherical nanocavities has been explored using multiple scattering theory. Both typical random dense packing of cavities and a fractal system of cavities were considered. In the first case, it is demonstrated that accounting for closed loops in the conduction electron trajectories significantly reduces the thermal conductivity. For the fractal system of cavities, which exhibits long-range spatial correlations, it is shown that a substantial reduction in thermal conductivity can occur at low fractal dimensions or low pore concentration. • Closed loops on electron trajectories reduce thermal conductivity of porous metal. • The fractal pore system reduces thermal conductivity catastrophically. • The reason for the decrease in thermal conductivity is the localization of electrons.

Source: Physica B Condensed Matter

DOI: 10.1016/j.physb.2025.417282

Authors: V.V. Maksimenko, V.A. Zagaynov, S.Yu. Krylov, I.E. Agranovski

Institutions: Moscow State Technological University, National Research Nuclear University MEPhI, Russian Academy of Sciences, Frumkin Institute of Physical Chemistry and Electrochemistry Russian Academy of Sciences, Griffith University

Language: English

Topic: Thermodynamic and Structural Properties of Metals and Alloys

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,250

OpenAlex ID: W4409907360

FWCI: 0.902

Cites: 20

Cited by: 3

Related to: 10