The experiments showed that the sintering process of SrTiO_3-based BLC doped whth CuO and GeO_2 was the liquid sintering The grain boundary of semiconducting SrTiO_3ceramics could be insulated by vapor-diffusion or by liquid-diffu- sion.

• 研究结果表明,掺有CuO和GeO_2的SrTiO_3的烧结过程为有液相参加的反应液相烧结,半导化以后的陶瓷的绝缘可以通过气相扩散和液相扩散的方式进行。