Glass ceramics

Abstract

The invention provides glass ceramics with a high dielectric constant. The glass ceramics comprises is prepared from the following ingredientscomponents in parts by weight: 15-30 wt% of SiO2, 10-18 wt% of SrO, 15-35 wt% of BaO, 20-35 wt% of Nb2O5, 0.5-10 wt% of Na2O and 1-5 wt% of ZrO2. The relative dielectric constant of the glass ceramics provided disclosed by the invention is above 40 or more,and the glass ceramics has a high relative dielectric constant and can be used for dielectric film substrates, protective glass, disk substrates and the like in a filter. Each component and contents are optimized, so that the problem of the forming opacificationand film formation of the glass ceramics which takes quartz solid solution and strontium barium niobate as main crystal phases can be solved, in addition, internal quality is even, and the glass ceramics can be efficiently and stably produced.

Description

technical field [0001] The present invention relates to a glass-ceramic, in particular to a glass-ceramic with high dielectric constant. Background technique [0002] With the rapid development of science and technology, people hope that optical equipment can be miniaturized and lightweight, which puts forward higher requirements on the energy storage characteristics of capacitors, making the development of dielectric materials as the core components of capacitors face more challenges. How to further increase the energy storage density of dielectric materials has become the focus of research. [0003] Common dielectric materials mainly include ceramics, polymers, and composite materials composed of the two. Ceramic materials have a very high dielectric constant, but the breakdown field strength is very small; polymer dielectric materials have a high breakdown field strength, but their dielectric constant is generally low, usually <5. The above shortcomings limit the dev...

AI Technical Summary

Problems solved by technology

The above shortcomings limit the development of the two materials prepared by traditional methods in the field of energy storage

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