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Thermal conductivity of porous copper manufactured by the lost carbonate sintering process
Author(s) -
Thewsey D. J.,
Zhao Y. Y.
Publication year - 2008
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200723121
Subject(s) - thermal conductivity , sintering , thermal conduction , materials science , copper , porosity , electrical resistivity and conductivity , conductivity , composite material , carbonate , mineralogy , metallurgy , chemistry , electrical engineering , engineering
This article describes an experimental investigation on the thermal conductivity of open‐celled porous copper manufactured by the Lost Carbonate Sintering process. The thermal conductivity was either measured directly using Corsan's method or calculated from electrical conductivity values using the Wiedemann–Franz law. The relationship between thermal conductivity and relative density followed the power law, with the exponents being 2.05 for the former and 2.96 for the latter method. The thermal conductivity measured by Corsan's method was higher than that calculated from electrical conductivity, mainly because the sintering defects in the cell walls made contributions to thermal conduction but not to electrical conduction. The pore size had no significant effect on the thermal conductivity. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)