Electrical conductivity of porous binary powder mixtures

Cooper, Marcia A.; Erikson, William W.; Oliver, Michael S.

doi:10.1016/j.mechmat.2021.104026

Electrical conductivity of porous binary powder mixtures

Journal Article · Fri Aug 13 00:00:00 EDT 2021 · Mechanics of Materials

DOI:https://doi.org/10.1016/j.mechmat.2021.104026· OSTI ID:1820404

Cooper, Marcia A. ^[1]; Erikson, William W. ^[2]; ^[2]

Texas A & M Univ., College Station, TX (United States)
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Simultaneous data of the quasi-static compaction and electrical conductivity of porous, binary powder mixtures have been collected as a function of bulk density. The powder mixtures consist of a metal conductor, either titanium or iron, an insulator, and pores filled with ambient air. The data show a dependency of the conductivity in terms of relative bulk density and metal volume fraction on conductor type and conductor particle characteristics of size and shape. Finally, finite element models using particle domains generated by discrete element method are used to simulate the bulk conductivity near its threshold while the general effective media equation is used to model the conductivity across the compression regime.

View Accepted Manuscript (DOE)

Research Organization:: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: NA0003525

OSTI ID:: 1820404

Alternate ID(s):: OSTI ID: 1868810

Report Number(s):: SAND--2021-10322J; 698335

Journal Information:: Mechanics of Materials, Journal Name: Mechanics of Materials Vol. 162; ISSN 0167-6636

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
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