Loading relations for metal powders pressed to high density

Page N.W. and Warpenius M.K. (1990) Loading relations for metal powders pressed to high density. Powder Technology, 61 1: 87-94. doi:10.1016/0032-5910(90)80069-B


Author Page N.W.
Warpenius M.K.
Title Loading relations for metal powders pressed to high density
Journal name Powder Technology   Check publisher's open access policy
ISSN 0032-5910
Publication date 1990-01-01
Sub-type Article (original research)
DOI 10.1016/0032-5910(90)80069-B
Open Access Status Not yet assessed
Volume 61
Issue 1
Start page 87
End page 94
Total pages 8
Subject 1500 Chemical Engineering
1606 Political Science
Abstract The Heckel and Kawakita models for powder loading have been compared for aluminium and lead powders loaded both quasistatically and dynamically. At the highest pressures, full theoretical density was achieved or approached in both powders. No significant loading rate effect was observed over the range considered (100 μs to several seconds). There were small differences in the loading behaviour of powders of different particle size but of the same material. This difference could be characterised in terms of the initial apparent density. The Heckel model was found to be inaccurate over the conditions considered. In contrast, the Kawakita model demonstrated good parameter estimation and accurate predictive capabilities (to within at least 0.5%) up to 100% theoretical density. The Kawakita model could even be used to model 'at load' densities exceeding the 'zero load' theoretical density.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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Created: Tue, 30 Aug 2016, 13:53:31 EST by System User