Method for Preparing a Ceramic Composite Powder Using Self Propagation High Temperature Synthesis

摘要

Provided is a method for preparing ceramic composite powder much simply and economically compared to a conventional method by self propagation high temperature synthesizing boron oxide powder and aluminum powder. The ceramic composite powder comprising BN, Al2O3 and AlN as main components is prepared by the following steps of: mixing 5-55wt.% of B2O3 powder(=100mesh size) and 45-95wt.% of Al powder(=100mesh); adding 5-75pts.wt(based on the mixed powder) of diluents, such as Al2O3, AlN and BN, to control the reaction rate; SHS reacting the mixed powder under N2 pressure of 3-100atm. The ceramic composite powder comprising BN and Al2O3 as main components is prepared by the following steps of: mixing 56-95wt.% of B2O3 powder and 5-44wt.% of Al powder; adding 5-75pts.wt(based on the mixed powder) of diluents such as Al2O3 or BN; SHS reacting mixed powder under N2 pressure.