抄録
Powder rolling is a possible way to produce grain-orientated ceramic materials with using plate-like powder particles. Orientation behavior of ceramic particles, plate-like alumina as a model material, during differential speed rolling was examined to seek the optimum condition of rolling. Powder particles were kneaded with an organic binder to plasticize, and slab specimens were formed in dies. The specimens, without any sheath, were rolled with changing the difference in rolling speeds of two roll. The average of the orientation angle and the standard deviation of the angle distribution obtained by image analysis for each plate-like particle were evacuated as the degree of orientation. The degree of orientation became higher as the ratio of roll speeds was increased.
