The compaction and mechanical properties of agglomerated materials
article
Following a discussion of the stages of powder compaction as presented in the literature, the authors propose extension of the generally accepted two stage compaction process to a four stage process for agglomerated materials. The mechanisms of compaction for two different spray-dried ceramic powders, a wall-tile granulate, and a ferrite granulate are described. After an adaptation of the compaction formulae of Kawakita for the highly porous spray-dried granulates a set of equations with a better fit is given, describing the relationships between pressure and volume compaction or density, and between porosity and strength and modulus of elasticity. All proposed equations are closely related to Kawakita's empirical equation and the theoretical relationship of Hasselman, and give an accurate fit over the whole range of pressures. © 1982.
TNO Identifier
280725
ISSN
00325910
Source
Powder Technology, 33(1), pp. 43-54.
Pages
43-54
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