Studies on Compaction of Powders. III. Compression Behavior of Several Powders under Low Pressure

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The compression runs on several powders of different particle size and hardness were made in the relatively low pressure range where the fragmentation of particles did not take place. The porosity/pressure data were arranged on the assumption that the porosity at a given pressure can be directly related with the average axial force acting on each particle. An empirical equation containing the constants which are not affected by particle size was then obtained. It was confirmed that the compaction parameters obtained above are related to the pressure transmission ratio and hardness of the material being compressed.

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