多孔質アルミナ型を使用したアルミナの鋳込み成形

概要

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Physical properties of advanced ceramics are influenced by defects produced in the forming process, and large defects can not be removed even by hot isostatic pressing process. The slip casting, which has been used in the forming process of traditional ceramics, enables one to make large and dense green bodies with complicated shapes. Wear and dissolution of gypsum molds contaminates the green bodies with calcium and sulfur. Porous alumina ceramics as casting molds were examined in comparson with gypsum from view points of wettability with water and rate of filter cake buildup. Porous alumina ceramics produced by a firing showed very high wettability values as compared with those for gypsum. Therefore, porous alumina ceramic mold with small pores provided larger penetration pressure and higher rate of filter cake buildup than gypsum mold.
社団法人日本セラミックス協会の論文
1993-08-01