Abstract BaO-K 2 O-Nb 2 O 5 -SiO 2 (BKNS) glass ceramics were prepared by microwave crystallization of transparent glass matrices and the effects of microwave treatment temperature on their dielectric performances, phase structure, microstructure and breakdown strength (BDS) were investigated systematically. X-ray diffraction results suggested that microwave treatment had no significant influence on the type of precipitated phases. The microstructure of the glass ceramics was remarkably optimized via microwave treatment. The dielectric constant and breakdown strength of microwave-treated samples were significantly improved as compared with conventional-heated samples at the same temperature. The maximum theoretical energy storage density of microwave-treatment samples at 750 °C reached 12.7 J/cm 3 , which was larger than that of the conventional-heated samples (8.6 J/cm 3 ).

中文翻译：

---

BaO-K 2 O-Nb 2 O 5 -SiO 2 微晶玻璃陶瓷的储能性能增强

摘要 通过透明玻璃基体的微波结晶以及微波处理温度对其介电性能、相结构、微观结构和击穿强度（BDS）的影响，制备了 BaO-K 2 O-Nb 2 O 5 -SiO 2 (BKNS) 玻璃陶瓷。进行了系统的调查。X 射线衍射结果表明微波处理对沉淀相的类型没有显着影响。通过微波处理显着优化了玻璃陶瓷的微观结构。在相同温度下，微波处理的样品的介电常数和击穿强度比常规加热的样品显着提高。750℃微波处理样品的最大理论储能密度达到12.7 J/cm 3 ，