To provide a material for use at high temperatures of several 100° C. which is simple and quick to produce, the invention provides a composite having a layer structure and a process for producing it, which comprises the following steps: a) provision of at least two plates which each have at least one main area of extension, b) stacking of the plates in such a way that a main area of extension of one plate is essentially opposite a main area of extension of the subsequent plate in the stack, c) joining of the stacked plates to form a block using a sinterable composition, d) carrying out a heat treatment on the block so that at least sintering of the sinterable composition occurs and a strong composite body is formed from the block.