Production and manufacturing technology of silicon nitride ceramic tiny component

Abstract

The invention discloses a production and manufacturing technology of a silicon nitride ceramic tiny component. The technology comprises the following steps of preparing materials for production including ceramic main powder, a sintering auxiliary agent, heterogeneous particles, a defoaming agent, deionized water and a bonding agent; mixing the heterogeneous particles into deionized water; adding the defoaming agent to prepare uniform slurry; mixing the ceramic main powder into the uniform slurry; performing drying after the uniform stirring; then, crushing the materials into powder A; adding the bonding agent into the powder A; using a sweet dumpling rolling method for manufacturing a required workpiece; using a plastic bath ceramic biscuit encapsulation method for performing encapsulation; adding the sintering auxiliary agent; using a firstly higher and then lower heat insulation measure for performing sintering treatment on the workpiece. The comprehensive measures of the crystal grain refining, micrometer toughening and nanometer reinforcement, the firstly higher and then lower heat insulation method and the like are used for improving the performance index of the silicon nitride ceramic. The plastic bath encapsulation method is used for solving the encapsulation problem of the biscuit in a complicated shape; the production efficiency of the tiny workpiece encapsulation is greatly improved.

Description

technical field [0001] The invention relates to the field of material science and engineering technology, in particular to a technology for manufacturing silicon nitride ceramic tiny components. Background technique [0002] The production path of advanced ceramics is: (1) batching—(2) mixing and abrasive—(3) granulation—(4) forming—(5) cold isostatic pressing—(6) degumming— --(7) Sintering. Every link in the current process affects the quality of the product. The different components determine the microstructure of the material and thus its various properties; the method and time of the abrasive and the subsequent sintering system determine the grain size of the sintered body and have a great impact on the properties. Cold isostatic pressing determines the density of the biscuit and thus determines the size and distribution of the voids in the sintered body and so on. There is great room for improvement in all current links. [0003] Because of the size, the tiny parts ...

AI Technical Summary

Problems solved by technology

And because the efficiency of the traditional method is too low, it is urgent to invent a new method that can form a higher production efficiency.