Please use this identifier to cite or link to this item: doi:10.22028/D291-24010
Title: Densification of powders by particle deformation
Author(s): Fischmeister, Hellmut F.
Arzt, Eduard
Language: English
Year of Publication: 1983
OPUS Source: Powder metallurgy. - 26. 1983, 2, S. 82-88
SWD key words: Pulververdichtung
DDC notations: 540 Chemistry
Publikation type: Journal Article
Abstract: Based on a previous experimental study of particle deformation during powder compaction, a model is developed for describing the densification behaviour of an irregular packing of spherical particles. Using the radial density function of a random dense packing, the increase in both the average size and the number of contact faces are calculated. A simple criterion for local yielding allows the compaction pressure to be determined for relative densities up to 90%. In the final stage of compaction, particle deformation, now constrained by neighbouring contacts, is modelled by extrusion into the remaining pore space. A compaction equation encompassing both stages is presented; its application to nonspherical powders elucidates the role of particle shape during powder densification.
Link to this record: urn:nbn:de:bsz:291-scidok-20404
Date of registration: 6-Feb-2009
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
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