Ceramic material with gradient micro-laminated pore structure and preparation method thereof

The invention relates to a ceramic material with a gradient micro-laminated pore structure and a preparation method of the ceramic material, and belongs to the technical field of porous ceramics. Comprising the following steps: adding ceramic powder, a sintering aid, a dispersing agent and sol into deionized water, and carrying out ball milling to prepare uniform slurry; conveying the sol aqueous solution into the ceramic slurry to obtain mixed slurry, sequentially conveying the mixed slurry with different solid phase contents into a mold, and regulating and controlling the gradient change of the ceramic content in the cured green body; freezing and forming in a direction perpendicular to the gradient direction; and carrying out vacuum freeze drying treatment and sintering to obtain the gradient micro-laminated porous ceramic material. The preparation method has the beneficial effects that the accurate gradient control of the microstructure and the performance can be realized by adjusting the preparation para