Characterization of the porosity-pressure relation of cohesionless powders

A. B. Yu, Z. H. Gu

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Abstract

An experimental investigation is presented of the effect of the particle size distribution on the compaction of cohesionless powders. It is demonstrated that the densification of a powder during compaction may be treated as a (pseudo-) rate process, and the porosity-pressure relation can be described by a simple and general equation. The results indicate that particle size distribution plays an important role in quantifying the porosity-pressure relation, though this relation may be dominated by the mechanical properties of powders at high pressures. A possible method of predicting the relationship between porosity and particle size distribution and pressure is also discussed.

Original languageEnglish
Pages (from-to)199-216
Number of pages18
JournalAdvanced Powder Technology
Volume4
Issue number3
DOIs
Publication statusPublished - 1993
Externally publishedYes

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