掺纳米Sm_2O_3的ZrO_2(3Y)固体电解质的密度、晶相和电性能

The Density,Phase and Electrical Properties of ZrO_2(3Y) Doped Nano-Sm_2O_3

在纳米ZrO2(3Y)粉中,加入不同摩尔分数(0.0-10%)的纳米Sm2O3粉进行复合掺杂。1300℃烧结样品的致密度在88%以上,Sm2O3掺入量2.0%时有最大致密度,为98.1%.Sm2O3的掺入使样品晶相从四方相向立方相转变,掺入量为5.0%以上时成为立方相。掺1.0%Sm2O3样品电导率稍有下降,掺入量为2.0%时电导率增大,5.0%时达到最大, 1000℃电导率为5.2×10 S2cm-1,高于相同条件下8%摩尔氧化钇全稳定立方相氧化锆ZrO2(8Y).

With adding of 0.0-10 mol% nano-Sm2O3,nano-ZrO2(3Y) powder was used as raw materials for composite doping. The densification of bodies sintered at 1300℃were over 88% ,the maximum was 98.1 % of the sample with 2.0 mol% Sm2O3. The phase of samples sintered transited from tetragonal to cubic,with adding Sm2O3. When the addition of Sm2O3 was up 5.0 mol% ,the phase of the samples was cubic. The conductivity of the sample with 1.0 mol% Sm2O3 slightly decreased. The conductivity of the one of 2.0 mol% was increase. The conductivity of the one of 5.0 mol% was the maximum, the conductivity was 5.2×10-2 S cm-1 at 1000℃,higher than the one of the samples of ZrO2(8Y) in the same condition.