| abstract |
The invention relates to a sintered product: - having a relative density of more than 90%; - with more than 80% of the volume thereof formed by a stack of flat small ceramic plates (10), all of said small plates having a mean thickness of less than 3 µm; - having a width (l) greater than 50 mm; and - comprising more than 20% of alumina, as a percentage based on the weight of the product, the width (l) of the product being the largest dimension measured in the plane (C) in which the length of the product is measured, in a direction perpendicular to the direction of said length, the length (L) of said product being the largest dimension thereof in a plane (C) parallel to the general plane in which the small plates extend. |