KERAMIKBASIS SOWIE VERFAHREN ZUR HERSTELLUNG.

摘要

Particulate projections are formed on the surface of a dense ceramic body so as to provide spaces between the projections divergent in the direction toward the surface of the ceramic body. At the outside these spaces are constricted and widen towards the inside. The ratio of the total area of the constricted parts to the total surface area is 0.5-10% (pref. 3-7%) and the number of the constrictions is 2,000-100,000 per sq.mm. (pref. 5,000-20,000). The mean roughness of the ceramic basrface is 0.4-1.0 micron. In mfr. laminated structural ceramics composed of a green ceramic and a surface layer ceramic are formed. The green ceramic contains ceramic materials which may be made dense by baking. The surface layer ceramic can be composed of or contain particulate ceramic materials. These laminated ceramics are baked at a temp. of which the green ceramics are made dense. Then the particulate ceramic is combined with the dense material. This process yields the desired shape for the spaces having a constricted top.