| 摘要 |
<p>A method of producing a grinding medium on the basis of alpha-alumina and at least one alumina carbide selected from the group consisting of Al2OC and Al4O4C comprises the steps of melting a mixture of alumina or a material rich in alumina with a carbon-containing reducing agent to obtain a melt, rapidly cooling the melt to obtain a solidified body, breaking the solidified body into abrasive grains, and subjecting the abrasive grains to a heat treatment at a temperature of 500 DEG C. and 1500 DEG C. for a period of three minutes to 24 hours.</p> |
