| 简介 |
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.
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.
COPYRIGHT : (C)2007, JPO&INPIT |
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