Preparation method of gradient composite material, structural member and electronic equipment

Abstract

The invention provides a preparation method of a gradient composite material, a structural member and electronic equipment. Mixing the various material particles to obtain a particle mixture, and vibrating to segregate the various material particles to obtain a segregated mixture; and the material particles with small density and large granularity float upwards, and the material particles with large density and small granularity sink, so that gradient segregation of various material particles is realized. And pressing the segregated mixture to obtain a blank, and sintering the blank to obtain the gradient composite material. Different material components in the gradient composite material are changed in a preset segregation gradient mode, no obvious abrupt change interface exists between different materials, the different materials are fully doped, and the bonding strength is high. The sintering temperature of the gradient composite material is gradually changed. The shrinkage rate and the thermal expansion coefficient of the gradient composite material are gradually changed. The content and granularity of various material particles are set as required, and the thickness, composition and segregation gradient of the gradient composite material can be freely designed, so that different positions of the gradient composite material meet expected performance requirements.

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