The electrical conductivity of the

测量和不进行后热处理的样品的电导率在图4（a）中显示。冷烧结后的陶瓷的电导率非常低，约为0.0005 S / cm，与Funahashi [126]在126℃制备的电导率相当。在Ar气氛中在300℃进行的后热处理可以显着提高电导率。将电导率提高到约1.5 S / cm。随着热处理温度的升高，电导率不断增加，在500℃时电导率最高达到16.4 S / cm，几乎是冷烧结电导率的3×104倍。通过进一步增加电导率，电导率相对稳定。<br>热处理后温度在12.0-16.0 S / cm的范围内。然而，在空气中500℃后热处理的样品的电导率较低，其值仅为0.5 S / cm左右，远高于冷烧结样品，而低于在Ar气氛中处理的样品。

The electrical conductivity of the as-prepared samples with and without post-heat-treatment was measured and displayed in Fig.4(a). Very low electrical conductivity with magnitude of around 0.0005 S/cm is obtained for the as-cold-sintered ceramics, comparable with that prepared at 126℃ by Funahashi[14].A post-heat-treatment at 300℃ in Ar atmosphere could dramatically improve the electrical conductivity to about 1.5 S/cm. The electrical conductivity increases continuously by increasing post-heat-treating temperature and reaches a maximum of 16.4 S/cm at 500℃, which is almost 3×104 times higher than that of as-cold-sintered ones. The electrical conductivity is relatively stable by further increasing the <br>post-heat-treating temperature, in the range of 12.0-16.0 S/cm. However, the sample post-heat-treated at 500℃ in air possesses low electrical conductivity with value only around 0.5 S/cm, much higher than the as-cold-sintered ones and lower than those treated in Ar atmosphere.

对经和未经热处理的制备样品的导电性进行了测量，并在图4（a）中显示。与Funahashi[14]在126℃下制备的A S冷烧结陶瓷相比，该陶瓷的电导率很低，约为0.0005s/cm，在Ar气氛中300℃后热处理可使其电导率显著提高到1.5s/cm左右。随着后热处理温度的升高，导电率不断提高，500℃时最高可达16.4s/cm，几乎是冷烧结的3×104倍。通过进一步增加<br>热处理后温度，范围为12.0-16.0s/cm。但500℃空气热处理后的样品电导率较低，仅为0.5s/cm左右，远高于冷烧结样品，低于Ar气氛处理样品。