A proposed new characterization of particle shape and its application

In order to identify particles morphologically nine new shape indices, using three kinds of powder particles which include circularity and elongation as reltionships between characteristic diameters, have been defined. Shape indices have been examined on their numerical lines. The nine shape indices were divided into three groups which characterize the concavities and/or convexities of a particle, mainly characterize slimless and do not characterize specific shape. Shape identification has been tried on two kinds of diagrams which were obtained by combining shape indices of different character.Particle shape without surface texture is characterized on the diagrams and it is also suggested that morphological identification of powder particles is possible with statistical treatment.