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The Porosity Dependence of Mechanical and other Properties of Materials

Published online by Cambridge University Press:  21 February 2011

Roy W. Rice  and
W. R. Grace
Roy W. Rice
Affiliation:
Co. -Conn., 7379 Route 32, Columbia, MD 21044
W. R. Grace
Affiliation:
Co. -Conn., 7379 Route 32, Columbia, MD 21044
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Abstract

Though the volume fraction (or %) porosity is commonly used as the exclusive porosity variable to describe the porosity dependence of physical properties, it is not sufficient. The average minimum solid area, i.e., of the bond or sintered area between sintering particles, or the minimum web or strut cross-sections is the most appropriate second porosity parameter. Pore shape-stress concentration effects have, at best, limited direct effect on mechanical properties, but generally correlate with minimum solid area effects. Methods of combining effects of different types of porosity within the same body are important and result in quite reasonable descriptions of mechanical properties across a broad range of porosities.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 207: Symposium I – Mechanical Properties of Porous and Cellular Materials , 1990 , 229
Copyright
Copyright © Materials Research Society 1991

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References

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