| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a cerium-based abrasive which is free of F, and works at a high abrasion speed and with a good abrasion precision. <P>SOLUTION: The cerium-based abrasive can be produced by mixing to burn a cerium-based rare earth carbonate salt, a cerium-based rare earth oxide or a mixture thereof with an alkali metal salt, an alkali earth metal salt of a mixture thereof, wherein the abrasive has an F content of 0.5 wt% or less, and an alkali metal or alkaline earth metal content or an alkali metal and alkaline earth metal total content of 0.3-5 wt% in terms of element. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
