Electrode silver paste for functional ceramics and preparation method of electrode silver paste

Abstract

The invention discloses electrode silver paste for functional ceramics and a preparation method of the electrode silver paste. The electrode silver paste is prepared from the following components in percentage by mass: 55 to 85 weight percent of a silver mixture, 0.8 to 1.8 weight percent of lead-free glass powder, 0.1 to 1 weight percent of a phase-forming compound and 13 to 44 weight percent ofan organic carrier. The preparation method is characterized by comprising the steps of premixing part of an organic carrier with lead-free glass powder sheets and the phase-making compound to form slurry, grinding and dispersing the slurry by a grinder, adding all silver mixture, grinding until the fineness of the slurry is less than 5 microns, mixing the residual organic carrier, and carrying outdouble-planet stirring defoaming to obtain the electrode silver paste for the functional ceramics. By solving the problems of sintering compactness of the metallized layer and regulation and controlof a glass phase interface structure, high carrier mobility, strong adhesive force, thermal expansion matching property, assembly reliability, environmental stability and cost economy of the functional ceramic metallized layer are finally realized, and the production process requirements of printing, dipping, spraying and hole dropping can be met.

Description

technical field

[0001] The invention relates to the technical field of information electronic materials, in particular to an electrode silver paste for functional ceramics and a preparation method thereof. Background technique

[0002] With the rapid development of information microelectronics towards miniaturization and three-dimensional integration, especially in my country's information construction, the need for new electronic components with high frequency, small size, high energy and large capacity is becoming more and more urgent. With the advent of the 5G era, 5G base stations are densely deployed. The filter used in 5G base stations is the core radio frequency device of the base station. It has the characteristics of small size, large Q value, low insertion loss, good stability, and high power withstand. The filter fully covers the silver paste electrode layer on the surface of the functional ceramic and welds it with the circuit board. After DC high-voltage polariz...

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