Polycrystalline sintered ceramic grinding medium for producing bonded or backed grinding media

摘要

A sintered ceramic grinding medium is produced from a pressure-less flat slip cast starting powder slip which is free from polymerizing and/or coagulating additions. A polycrystalline sintered ceramic grinding medium is produced by: (a) pressure-less flat slip casting of a starting material powder slip which is free from polymerizing and/or coagulating additions; and (b) subjecting the cast layer to degassing, drying, crushing and sintering. Independent claims are also included for the following: (i) a grinding medium prepared by the above process; (ii) a bonded grinding medium or a grinding medium on a backing, in which the grinding medium is prepared by the above process; (iii) a honing tool or a lapping, grit blasting or polishing medium comprising a grinding medium prepared by the above process; and (iv) a grinding tool comprising a grinding medium prepared by the above process.