Composite materials (1 − f) CaWO₄ – fSiO₂ with volume fraction of SiO₂ f ≤ 1.0 were prepared by the solid state method. The obtained composites have been examined by SEM-EDS, the electrochemical impedance technique, conductivity measurements versus oxygen partial pressure and EMF measurements in order to evaluate ion transport numbers. It was shown that heterogeneous doping of the poor oxygen ion conductor CaWO₄ with nano-SiO₂ even at low concentration (f < 0.03) leads to an increase in ionic conductivity of the composites by more than an order of magnitude. The enhancement of conductivity in this system was explained by an additional contribution of the interface regions formed between the host and nanoparticles of dispersoid. A general mixing rule was applied for the calculation of electric conductivity of the (1 − f)CaWO₄ – fSiO₂ composite as a function of SiO₂ concentration. Theoretical dependences were analyzed and compared with the experimental results.

复合材料（1 -  ˚F）CaWO ₄ - ˚F的SiO ₂与由SiO体积分数₂ ˚F  1.0≤是由固态方法制备。通过SEM-EDS ，电化学阻抗技术，电导率测量相对于氧分压的测量以及EMF测量，对所获得的复合材料进行了检查，以评估离子传输数。结果表明，即使在低浓度下，贫氧离子导体CaWO ₄仍会被纳米SiO ₂异质掺杂（f 小于0.03）会导致复合材料的离子电导率增加超过一个数量级。该系统中电导率的提高是通过在主体和弥散体的纳米颗粒之间形成的界面区域的额外贡献来解释的。一般的混合规则是在应用了的导电性的计算（1 -  ˚F）CaWO ₄ - ˚F的SiO ₂复合以SiO的函数₂浓度。对理论依赖性进行了分析，并与实验结果进行了比较。