1983
DOI: 10.1111/j.1151-2916.1983.tb15705.x
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Field-Property Bounds for Porous Sintered Ceramics

Abstract: Three sets of equations provide upper and lower values bound ing the experimentally obtained electrical and thermal conduc tivities as well as the magnetic permeabilities (=“field properties”) of porous ceramics. These equations are as I‐order upper bound: φp=φM(1‐P) (φ=effective field property of the porous material, φM=field property of the nonporous material, P=porosity), and as I‐order lower bound: φr=φM (1‐P)7. Closer bounds corresponding to isotropic porous materials are the II‐order upper bound: φPII,=φ… Show more

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Cited by 12 publications
(5 citation statements)
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“…To facilitate comparisons, for each temperature, the k values in Figure are normalized to the k values of the almost-fully dense sample, 76 (99%). Three classical models for porous media based on Fourier’s law are also shown. These classical theories are most appropriate for isolated pores that are approximately spherical, which as shown in panels d and e of Figure is a good assumption for sample 80 (97%) but less so for sample 64 (83%).…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…To facilitate comparisons, for each temperature, the k values in Figure are normalized to the k values of the almost-fully dense sample, 76 (99%). Three classical models for porous media based on Fourier’s law are also shown. These classical theories are most appropriate for isolated pores that are approximately spherical, which as shown in panels d and e of Figure is a good assumption for sample 80 (97%) but less so for sample 64 (83%).…”
Section: Resultsmentioning
confidence: 99%
“…Normalized thermal conductivity vs porosity for the fine-grained samples 76 (99%), 80 (97%), and 64 (83%) at three temperatures, compared with traditional models for porous media. .…”
Section: Resultsmentioning
confidence: 99%
“…Nevertheless, results for sintered iron samples [94] show an evident non-linear relationship between porosity and coercivity. A non-linear relationship of both magnetic induction and coercivity with porosity has also been found for sintered iron samples [95]. Moreover, the influence of pore concentration and morphology on the maximum or saturation induction has been found according to a power law expression (Archie's law):…”
Section: Influence Of Porosity On Magnetic Propertiesmentioning
confidence: 87%
“…While intrinsic, the saturation magnetization is influenced by the concentration and morphology of the pores according to a power law expression [28,29] …”
Section: Magnetic Propertiesmentioning
confidence: 99%