Preparation method of multilayer functional ceramic component

Abstract

The invention provides a preparation method of a multilayer functional ceramic component. The method comprises the following steps: preparing ceramic slurry, and carrying out tape casting to obtain aceramic blank sheet; cutting the ceramic blank sheet, and then punching at a preset position to obtain a plurality of ceramic sheets with through holes; preparing a gel injection molding slurry containing an organic auxiliary agent capable of initiating gelation; stacking the ceramic sheets; arranging a metal circuit structure between the layers of the laminated ceramic sheets and in the through holes or in the through holes of the laminated ceramic sheets, injecting gel injection molding slurry matched with the metal circuit structure, and curing the gel to obtain a green body; and laminatingthe green body, and then sintering to obtain the multilayer functional ceramic component. According to the preparation method, the gel injection molding slurry is introduced and is matched with the metal circuit structure, and the shrinkage stress of the ceramic sheet and the expansion stress of the metal circuit structure are released by shrinkage of the gel layer of the gel injection molding slurry during sintering, so that the close fit between the metal circuit structure and the through hole is ensured; and the problems that the metal circuit structure is not shrunk during sintering to crack the ceramic part and the like are avoided.

Description

technical field [0001] The invention relates to the field of functional ceramic components, in particular to a method for preparing a multilayer functional ceramic component and a multilayer functional ceramic component. Background technique [0002] In recent years, due to the rapid development of application fields such as the Internet of Things, high-frequency communications, and mobile terminals, multilayer functional ceramic components are developing in the direction of smaller volume, more layers, and more complete functions. The mainstream preparation process of multilayer functional ceramic components is generally to form green sheets by tape casting, and then prepare finished products by cutting, punching, screen printing or filling metal paste, laminating, co-firing and other processes. In order to meet various functional requirements, multilayer functional ceramic components are usually designed as a multilayer composite structure of ceramic functional bases and m...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method for preparing a multilayer functional ceramic part and a multilayer functional ceramic part to solve the problems existing in the preparation process of the existing multilayer functional ceramic part. The width of the metal circuit line and the diameter of the metal guide post are limited; the shrinkage mismatch between the metal slurry and the ceramic green sheet is likely to cause the fracture failure of the metal guide post and interlayer cracking and penetration in the multilayer ceramic co-firing; different interlayer materials Different, there is a difference in thermal expansion coefficient, multilayer functional ceramic parts are easy to warp and deform, etc.

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