PROCESSING OF CERMETS Many metal matrix composites(MMCs) and ceramic matrix composites(CMCs) are processed by particulate processing methods.The most prominent examples are cemented carbides and other cermets. Cemented Carbides The cemented carbides are a family of composite materials consisting of carbide ceramic particles imbedded in a metallic binder They are classified as metal matrix composites because the metallic binder is the matrix which holds the bulk material together however, the carbide particles constitute the largest proportion of the composite material, normally ranging between 80% and 95% by volume. Cemented carbides are technically classified as cermets, although they are often distinguished from the other materials in this class.