気孔制御によるアルミナ強化磁器の軽量化

概要

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Tableware of alumina-strengthened porcelain are heavy and may break by mechanical impact other tablewares consisting of quartz-base porcelain due to its elevated specific gravity, depending on α-alumina content.Starch particles were introduced as temporary organic additives into the starting slurry for alumina strengthened porcelains, and the effect of size distribution of isolated pores and porosity formed in the fired bodies was examined, in order to decrease the specific gravity with minimum strength degradation.In glazed bodies added with 11.5 mass of corn starch particles finer than 20μm, a bending strength of 180 Mpa was obtained, despite a decrease of about 18% in bulk density, and the density coincided with those of ordinary quartz-base porcelains, 2.35×10^3kg・m^<-3>.
社団法人日本セラミックス協会の論文
1998-09-01