セッコウ型を用いた泥しょう鋳込による透光性アルミナの製作

概要

論文の詳細を見る
Translucent Al_2O_3 ceramics could be successfully produced by slip casting using a gypsum mold, provided that CaSO_4 impurities, which had penetrated into the green compacts from the gypsum mold, were removed by the wash of calcined compacts with HCl aqueous solution. Al_2O_3 ceramic samples were sintered at 1350℃ for 2 h under vacuum. The relative densities of the sintered Al_2O_3 ceramic compacts with the HCl treatment were slightly higher than those of the untreated samples. Grains in the HCl-treated samples grew homogeneously with about 1 μm in diameter. The sintered Al_2O_3 ceramics with the HCl treatment were translucent. Transmittance values were measured by spectroscopy. Transmittance values in the HCl-treated samples increased from 0 to 12% as the wavelength increased from 300 to 900 nm.
社団法人日本セラミックス協会の論文
2000-11-01