Manufacturing method of low-cost surface layer type semiconductor ceramic capacitor porcelain

Abstract

A method for manufacturing low-cost surface layer type semiconductor ceramic capacitor porcelain material. The first step is the synthesis of doped BaTiO3 sinter blocks; the second step is the synthesis of Tc moving agent sinter blocks; the third step is the manufacture of porcelain materials. The present invention uses industrial grade or electronic first-grade TiO2 to replace expensive high-purity TiO2, and adopts a new process of synthetic doping to replace the traditional process, thereby achieving a significant reduction in the production cost of porcelain materials, and the performance of the porcelain materials fully meets the requirements. In addition, a variety of doped rare earth elements are used to replace the expensive neodymium oxide rare earth elements, which further reduces production costs and significantly improves the performance of porcelain materials.

Description

technical field [0001] The invention belongs to the field of electronic materials, and in particular relates to a method for manufacturing low-cost surface-layer semiconductor ceramic capacitor ceramic material. Background technique [0002] Semiconductor ceramic capacitors are generally divided into three categories, namely barrier layer type, surface layer type and grain boundary layer type. The surface layer type has the advantages of large specific volume, good manufacturability, simplicity, and easy mass production. It is widely used in various electronic products such as communications and computers. For ceramic materials used in surface layer semiconductor ceramic capacitors, the following three conditions should be met at the same time: (1) The εr of the ceramic material itself should be as large as possible; (2) The structure of the ceramic material should be dense, and the grain It should be fine and uniform; (3) The ceramic material should be easy to reduce and r...

AI Technical Summary

Problems solved by technology

Existing technologies generally use high-purity raw materials and traditional techniques to produce porcelain materials, and generally suffer from low εr and unstable techniques

Moreover, it shows that the doping effect is unstable, and the amount of solid solution with neutral vacancy at the Ba site is insufficient.

The most prominent is that high-purity raw materials must be used to keep the cost high