binder in the form of a press assistance material and via the dry pressing in the following bond release the introduced binding material was burnt out and the blank was thus formed with a porous structure thereafter the pre sintering was performed after the pre sintering a part with 50 thickness depth td was achieved the evacuation of the blank 10 was performed in the desiccator 14 with a finish pressure of approximately 20 mbar due to the comparatively long evacuation time which in any event amounted to more than 1 hour the gas enclosed in the porous blank was substantially removed infiltration material based upon tetraethoxysilane tetraethylorthosilicate teos was used teos was together with water with a catalyst of aluminum nitrate nonhydrate al no 3 3 u00d7 9 h 2 o mixed with a sol as a function of the mixing time and the subsequent standing time the sol reacted slowly into a gel and condensed into a glass similar structure cerium nitratheydrate was also introduced to the actual catalyst it was attempted to prepare the infiltration material so that after the infiltration into the infiltration coating a firm gel was quickly formed which converted after the sintering into a silica glass phase the infiltration coating was comprised in accordance with the invention principally of tetragonal crystalline zirconium oxide phases as well as an amorphous glass phases substantially from condensed teos while the core of the inventive oxide ceramic piece was substantially comprised of zirconium oxide with the previously noted.