Abstract
The thermal conductivity of wood-derived graphite and graphite/copper composites was studied both experimentally and using finite element analysis. The unique, naturally-derived, anisotropic porosity inherent to wood-derived carbon makes standard porosity-based approximations for thermal conductivity poor estimators. For this reason, a finite element technique which uses sample microstructure as model input was utilized to determine the conductivity of the carbon phase independent of porosity. Similar modeling techniques were also applied to carbon/copper composite microstructures and predicted conductivities compared well to those determined via experiment.
| Original language | English |
|---|---|
| Pages (from-to) | 182-189 |
| Number of pages | 8 |
| Journal | Composites - Part A: Applied Science and Manufacturing |
| Volume | 53 |
| DOIs | |
| State | Published - Oct 1 2013 |
Funding
This work was supported by the National Science Foundation , DMR-0710630 . SEM work was performed in the EPIC facility of the NUANCE Center at Northwestern University. NUANCE Center is supported by NSF-NSEC, NSF-MRSEC, The Keck Foundation, The State of Illinois, and Northwestern University. Portions of this work made use of the Optical Microscopy and Metallography Facility, supported by the MRSEC program of the National Science Foundation , DMR-0520513 , at the Materials Research Center of Northwestern University. DSC work was performed at CITIUS-University of Seville, Spain, with the assistance of J. Quispe Cancapa and C. Vera García. Portions of this work made use of the High Temperature Materials Laboratory at Oak Ridge National Lab through the HTML User Program sponsored by the United States Department of Energy, Office of Energy Efficiency and Renewable Energy, Vehicle Technologies Program. The authors also wish to thank Edwin Fuller Jr. for advice concerning OOF analysis.
| Funders | Funder number |
|---|---|
| NSF-MRSEC | |
| NSF-NSEC | |
| United States Department of Energy | |
| National Science Foundation | DMR-0710630 |
| W. M. Keck Foundation | |
| Office of Energy Efficiency and Renewable Energy | |
| Oak Ridge National Laboratory | |
| Northwestern University | |
| Materials Research Science and Engineering Center, Harvard University | DMR-0520513 |
Keywords
- B. Porosity
- B. Thermal properties
- Biomorphic materials
- C. Finite element analysis (FEA)