PROBLEM TO BE SOLVED: To obtain an alumina sintered compact having high resistance to crack occurrence and breaking caused by quick heating and quick cooling, namely high thermal shock resistance and excellent durability and corrosion resistance. ;SOLUTION: This thermal shock-resistant alumina sintered compact has ≥97 wt.% alumina content and 0.1-3 wt.% zirconia content, comprises zirconia crystal particles existing in alumina crystal grain and zirconia segregated in alumina grain boundary, has 8-70 μm average crystal particle diameter of sintered compact and ≥3.7 g/cm3 bulk density of sintered compact. A member for heat treatment comprises the thermal shock-resistant alumina sintered compact.;COPYRIGHT: (C)2001,JPO
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机译:解决的问题:获得具有高的耐因快速加热和快速冷却引起的裂纹发生和断裂的能力的氧化铝烧结体,即高耐热冲击性和优异的耐久性和耐腐蚀性。 ;解决方案:这种抗热震氧化铝烧结体的氧化铝含量为97%。%,氧化锆含量为0.1-3 %%,包括存在于氧化铝晶粒中的氧化锆晶体颗粒和隔离在氧化铝晶界中的氧化锆,具有8-烧结体的平均晶体粒径为70μm,烧结体的堆积密度为3.7g / cm 3。热处理用构件由耐热冲击氧化铝烧结体构成。版权所有:(C)2001,日本特许厅
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