針状ムライトを用いた多孔質セラミックスの作製と諸特性

概要

論文の詳細を見る
Porous mullite ceramics with porosity of 26-57% were prepared from needle-like mullite crystals of 3-5 μm long and 0.5-1.0 μm in diameter synthesized by firing New Zealand kaolin at 1650℃. Pore characteristic (porosity, pore diameter), three points bending strength and thermal conductivity were examined on the porous mullite ceramics sintered at 1550°-1700℃ in air. With increasing sintering temperature, the pore volume decreased, resulting in an increase in the bending strength. However, the pore size distribution was almost independent of the sintering temperature. The average pore diameters for the porous mullite ceramics sintered at 1550°-1700℃ were in the range of 0.46-0.58μm. Thermal conductivity at room temperature decreased linearly with increasing porosity.
社団法人日本セラミックス協会の論文
1991-08-01