Abstract
The present study deals with the characterization in the particle size distributions of metallic powders. The Rosin-Rammler distribution is used as a particle size distribution function for its good applicability. First, a new number based expression is introduced for a modified Rosin-Rammler distribution which has been proposed in a previous paper, and compared with the previous expression. Next, the calculating equations are presented for the various mean particle diameters of the powders, having the distributions. Furthermore, the equations can be applied to the cases of classification and blending of powders.
The results are summarized as follows:
(1) New number based approximate equation is at least ten times more accurate for the expression of the modified Rosin-Rammler distribution than the previous equation.
(2) The equations for the calculation of the various mean particle diameters of the distributions have been derived.
(3) The various mean particle diameters can be also calculated in the cases of classification and blending of the powders.
The present results can be also applicable for other distributions such as grain and pore sizes, etc.
