ρ-アルミナのα-アルミナ・スラリー用バインダー特性 : ρ-アルミナの比表面積のスラリー硬化への影響

概要

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The effect of the specific surface area of added ρ-alumina on hardening of α-alumina slurry was investigated by the measurement of the penetration resistance of α-alumina slurry. ρ-alumina was made by the heating of Al(OH)_3 from 200 to 700℃ in vacuum. The penetration resistance increased with increasing holding time. The holding time required to reach the same penetration resistance decreased with increasing specific surface area of ρ-alumina, when it contained neither Al(OH)_3 nor η-alumina. In the case where Al(OH)_3 remained in ρ-alumina(heat treated below 300℃), the hardening of the slurry proceeded more rapidly than that of the slurry without Al(OH)_3 exhisting about the same specific surface area. When η-alumina was formed(heat treated above 600℃), then the hardening of the slurry proceeded more slowly than that of the slurry wihout η-alumina.
社団法人日本材料学会の論文
1998-04-15