| 摘要 |
PURPOSE:To obtain the subject sintered product of increased mechanical strength as well as of both improved low expansibility and thermal shock resistance by mixing a powdery compound of spinel structure with mixed powder of equimolar composition of Al2O3 and TiO2 followed by forming and then sintering. CONSTITUTION:Mixed powder of equimolar composition of Al2O3 and TiO2 capable of forming Al2TiO5 when sintered or Al2TiO5 powder is incorporated with, as additive, 0.2 to 20wt.% of a compound of spinel structure such as MgAl2O4 or FeAl2O4 or mixed powder of a metal oxide (e.g. MgO, Fe2O3) and Al2O3 forming spinel structure followed by green forming and then sintering, thus obtaining the objective sintered compact stable at high temperatures. |
