セラミックス顆粒の圧縮変形特性がCIP成形性及び焼結性に及ぼす影響(第1報) : 顆粒特性がCIP成形性に及ぼす影響

概要

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Load displacement curves and fracture behavior of individual ceramic granules were investigated by compression test. Three types of load displacement curves were recognized for the granules: Granules of Al_20_3 (A) showed elastic deformation and were ultimately broken, while no breaking of granules was observed for SiC and Si_3N_4 which showed elasto plastic and plastic deformation, respectively. Surface and inner structures of green bodies prepared by cold isostatic pressing (CIP) were observed to relate data from mechanical characterization of individual granules and the macroscopic compaction behavior. No deformation of granules was observed in compacting sonre Al_20_3 with a CIP pressure of 340 MPa, while SiC and Si_3N_4 granules were deformed easily under a CIP pressure of 100 MPa and 25 MPa, respectively. It is discussed that load displacement curves of individual granules in compression test can be closely related to the macroscopic com pectin behavior of ceramics.
社団法人日本セラミックス協会の論文
1995-12-01