| 摘要 |
PURPOSE:To efficiently produce a sintered compact of mullite having high density, high strength and high toughness. CONSTITUTION:Mixed powder of alumina powder having 0. l-2mum average particle diameter and amorphous silica powder having 0.5 or smaller as long average particle diameter as the alumina powder is molded in a mold in such a way that the amorphous silica powder is mutually formed into a continuous phase and burnt to produce a sintered compact of mullite. Further, 10wt.% or less calculated as oxide of at least one of Pb, Ti, Fe, Co, Cu, Zn, Mn and V based on total amount calculated as oxide of the alumina and silica components is added to the mixed powder. |
