NON-MAGNETIC SINTERED BODY BASED ON SIC AND USE THEREOF

摘要

The invention relates to a ceramic sintered body, based on SiC and with a density > 95 %, which is particularly suitable for magnetically-relevant applications, such as, for example, hard disc memory substrates or read/write heads. The above is characterised in having a saturation magnetisation of Ms < 1,2 memu/cm<3> and is prepared by one of the following methods: a) pressureless solid sintering with sintering adjuncts based on Al/C, B/C or Al/B/C with or without a subsequent treatment by hot isostatic pressing, b) pressurised solid sintering with sintering adjuncts based on B/C or Al/B/C, or c) liquid phase sintering with sintering adjuncts based on rare earths (in particular Y2O3) plus Al203 and/or AlN.