为开发体积密度小、热导率低的保温隔热材料，以 Y2 O3稳定 ZrO2纤维和 Y2 O3稳定 ZrO2微粉为原料，以ZrO2溶胶和淀粉溶液为结合剂，采用压滤成型工艺，经干燥、热处理制备了 ZrO2纤维隔热板。并研究了 ZrO2微粉加入量（其质量分数分别为5％、10％、15％、20％和25％）和热处理温度（分别为1600、1700、1800和1900℃）对其线收缩率、物相组成、显微结构及热导率的影响。结果表明：ZrO2纤维隔热板在1700℃基本不收缩，1800℃收缩0．98％，400℃热导率仅为0．070 W·（m·K）－1；1800℃高温处理后，隔热板中的纤维仍保持纤维状形态，纤维晶粒明显长大，出现竹节形状；高温处理后，组成隔热板的晶相为立方相结构，没有出现其他晶相。
Using 8 mass% Y2 O3 stabilized zirconia fiber and zirconia micropowder as raw materials,zirconia sol and starch solution as binder,zirconia boards were prepared by pressure filtration,drying,and heat treatment in order to develop low bulk density and low thermal conductivity insulation boards.The effects of zirconia micropowder addition (5%,10%,15%,20%,and 25%,by mass)and heat treatment temperature (1 600,1 700,1 800,and 1 900 ℃)on the linear shrinkage,phase composition,microstructure and thermal conductivity of the boards were investigated.The results show that linear shrinkage of the zirconia fiber board nears zero after heat treatment at 1 700 ℃ and is 0.98% at 1 800 ℃;the thermal conductivity is only 0.070 W/(m·K)at 400 ℃;after heat treatment at 1 800 ℃,fiber in the board still keeps the original state. Grains in fiber grow up obviously and bamboo-shaped fibers can be observed;there is no other phase in the fiber board except for cubic crystal phases after high temperature heat treatment.
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