Abstract The influence of zirconium dioxide (ZrO2) content on crystallization, densification, and dielectric performance of calcium borosilicate (CBS) glass-ceramics was systematically investigated by differential scanning calorimetry, X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy and electrical measurements. The results revealed that ZrO2 doping reduced the crystallization temperature of CBS glass-ceramics and introduced crystalline phase of another impurity; however, excessive ZrO2 led to an increase in the crystallization temperature. Furthermore, the increase of ZrO2 content promoted the precipitation of wollastonite crystal phase. However, excessive ZrO2 damaged the close arrangement of wollastonite crystal grains in the microstructure and weakened the dielectric properties of the CBS glass-ceramics. Under optimal sintering conditions, the CBS glass-ceramics with molar ratio of n(Ca):n(Si):n(B) = 1:1:0.6 and ZrO2 content of 1 wt.% resulted in dielectric constants of 3.6 and 3.7 and a dielectric loss of 2.9 × 10−3 and 6.1 × 10−3 at 1 and 10 MHz, respectively.

中文翻译：

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ZrO2掺杂硼硅酸钙微晶玻璃的特性和介电性能

摘要 采用差示扫描量热法、X 射线衍射、扫描电子显微镜、傅里叶变换红外光谱和电学方法，系统地研究了二氧化锆 (ZrO2) 含量对硼硅酸钙 (CBS) 微晶玻璃结晶、致密化和介电性能的影响。测量。结果表明，ZrO2的掺杂降低了CBS微晶玻璃的结晶温度，并引入了另一种杂质的晶相；然而，过量的 ZrO2 导致结晶温度升高。此外，ZrO2 含量的增加促进了硅灰石晶相的析出。然而，过量的ZrO2破坏了硅灰石晶粒在微观结构中的紧密排列，削弱了CBS微晶玻璃的介电性能。