采用纳米ZrO2(8Y)粉和纳米ZnO粉为原料,对掺少量ZnO的ZrO2(8Y)进行无压烧结研究.实验结果表明,掺少量的ZnO能促进ZrO2与Y2O3的反应,加快四方相向立方相的转变,样品致密度和电导率显著提高.掺0.5wt％ZnO样品在1200℃煅烧2h的陶瓷致密度为94％,700℃时的电导率为9.02×10-3cm-1·Ω-1.
With adding of nano-ZnO, nano ZrO2(8Y) powder was used as raw materials for pressureless sintering at 1200℃. The results show that a small addition
of nano-ZnO accelerates the reaction between Y2O3 and ZrO2 in ZrO2(8Y). The ZrO_2(8Y)ceramic without nano-ZnO exhibits predominant tetragonal phase
with a small percentage of monoclinic, but the samples doped with nano-ZnO(0.5%～2.0% in mass)show a purely cubic phase. The densification and the conductivity of the
ceramic doped with nano-ZnO increase significantly.The densification of 94% and the conductivity of 9.02×10-3cm-1·Ω-1 at 700℃ were
observed for the sintered body doped with 0.5wt% nano-ZnO.
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