Abstract
The compaction behaviours of the potassium chloride powders were studied with or without 2.0% magnesium stearate. Their mechanical properties, namely the stress-strain in the one-dimensional compression, the yield locus and the wall yield locus, were obtained experimentally. The coefficients of internal friction and that of wall friction decreased by addition of magnesium stearate, especially for the latter it was remarkable. Using these data, pressure-transmission-ratios (PL/PU) were calculated theoretically, and compared with experimental results.
