METHOD FOR PREPARING COMPOSITE CERAMIC POWDER

摘要

There is disclosed a method for preparing a coated powder comprising the steps of adding a carbon powder and an aluminum nitride powder to a methylsilicic acid powder or a precursor of the methylsilicic acid and mixing them and then subjecting the resulting mixed powder to a heat treatment in an atmosphere including an inert gas or a carbon component-containing gas in order to coat the aluminum nitride powder with silicon carbide. This invention provides a chemically stable coated powder and a sintered body obtained by employing the coated powder has a good thermal conductivity.