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Compaction Behavior of Several Ceramic Powders
Author(s) -
COOPER A. R.,
EATON L. E.
Publication year - 1962
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1962.tb11092.x
Subject(s) - compaction , ceramic , materials science , volume (thermodynamics) , composite material , porosity , volume fraction , particle size , particle (ecology) , geotechnical engineering , mineralogy , geology , thermodynamics , chemical engineering , engineering , physics , oceanography
The compaction behavior of four ceramic powders of widely different hardness but of essentially the same particle‐size fraction (nominally 44 to 62μ) was examined by measuring the travel of a laboratory hydraulic press. The results revealed that the softer powders yielded a greater fractional volume compaction at a given pressure. An account of compaction by two largely independent probabilistic processes, the filling of large holes and the filling of small pores, led to an expression for the fractional volume compaction, , in terms of applied pressurewhich, with the proper choice of coefficients, a t and k t , was found to be adequate to describe the behavior of all the powders.