Multilayer ceramic body with monolithic structure

摘要

A novel ceramic body consists of superposed alternating high density ceramic layers and high porosity ceramic layers with ceramic microstructures forming bridges between adjacent high density layers, the ceramic content of the overall body being 20-99 vol.%. The body may consist of luminescent ceramic, in which the high porosity layer voids are filled with either a resin matrix containing finely dispersed light scattering powder or a light reflective material, or may include a ferroelectric layer, the high porosity layer voids being filled with electrically conductive material. Also claimed is a method of producing a layered structure ceramic body by (a) stacking green ceramic foils alternately with foil matrices (FM) of thermally and/or oxidatively decomposable (preferably cellulose-based) material, having openings (DB) in the form of a microstructure; (b) pressure laminating the stack so that the green foil ceramic material flows into the microstructure (DB); and (c) sintering so that the foil matrices undergo residue-free decomposition.