A novel glass-ceramic material based on albite type Na-rich feldspar has been synthesized by conventional ceramic process. High crystallinity, >94% Vol.% is obtained by fast sintering which allows energy saving processing. Albite is the main crystalline phase and tetragonal SiO₂ is a secondary phase. Electrical properties were examined by complex impedance, DC measurements, and dielectric breakdown test. Dielectric characterization shows a non-Debye type dielectric behavior with low dielectric constant, 4.6 at 1 MHz, low dielectric losses, (∼10⁻³ at 1 MHz, and a large dielectric strength, ∼60 kV/mm), that it is the largest value reported in ceramic insulators. Those dielectric properties are attained by the low glassy phase content in the samples and their unique micro-nanostructure. All these properties make this novel material a very promising candidate in the market of ceramic electrical insulator, highlighting for high-voltage applications.

通过常规的陶瓷工艺合成了一种基于钠长石型富钠长石的新型玻璃陶瓷材料。通过快速烧结获得高结晶度，> 94％Vol。％，可以节省能源。碱是主要的结晶相，四方的SiO ₂是第二相。通过复数阻抗，DC测量和介电击穿测试来检查电性能。介电特性显示出非德拜型介电性能，介电常数低，在1 MHz时为4.6，介电损耗低（〜10 ^-3在1 MHz频率下具有很高的介电强度（〜60 kV / mm），这是陶瓷绝缘子中报道的最大值。那些介电特性是通过样品中低玻璃态相含量及其独特的微纳米结构来实现的。所有这些特性使这种新型材料成为陶瓷电绝缘体市场上非常有前途的候选者，突出了高压应用。