ABSTRACT
Reaction bonding provides a method of consolidating and densifying crystalline ceramic matrices derived from slurry infiltration of continuous fiber tows or twoor three-dimensional preforms. With reaction bonding. the matrix of a slurryinfiltrated preform is formed by chemical reaction, rather than by joining of like particles as in sintering or hot pressing. Three general variations are possible. The slurry-infiltrated preform containing a particulate material can react with an infiltrating gas. Alternatively, the slurry-infiltrated preform containing a particulate material can be impregnated with a second, molten material, causing reaction. Finally, two (or more) different types of particulate materials can be included in the slurry and these can be heated to cause reaction with each other.
