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http://dx.doi.org/10.4191/KCERS.2006.43.12.859

FE Analysis of Alumina Green Body Density for Pressure Compaction Process  

Im, Jong-In (Simulation Center for Fine Ceramics/Electronic Device Team, KICET)
Yook, Young-Jin (Simulation Center for Fine Ceramics/Electronic Device Team, KICET)
Publication Information
Journal of the Korean Ceramic Society / v.43, no.12, 2006 , pp. 859-864 More about this Journal
Abstract
For the pressure compaction process of the ceramic powder, the green density is very different with both the ceramic body shape and the processing conditions. The density difference cause non-uniform shrinkages and deformations, and make cracks in the sintered ceramics. In this paper, Material properties of the alumina powder mixed with binder and the friction coefficient between the powder and the tool set were determined through the simple compaction experiments: Also the powder flow characteristics were simulated and the green density was analyzed during the powder compaction process with Finite Element Method (FEM). The results show that the density distributions of the green body were improved at the optimized processing condition and both the possibility of the farming crack generation and rho deformation of the sintered Alumina body were reduced.
Keywords
Alumina powder; Pressure compaction process; FEM; Green body density;
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