Abstract
Spark plasma system (SPS) has been called spark plasma sintering (SPS) or plasma activated sintering (PAS). This system is characterized by generation of spark plasma. The plasma has not been identified directly. There are several unique phenomena which are considered to be resulted from the effect of plasma. The following examples are described. Aluminum metal is sintered. Pure tungsten carbide becomes a dense body. Discharged pattern is obtained on the surface of insulator. Organic fibers are etched. Carbon is solidified. Thermosetting polyimide is consolidated. Structure of insoluble polymonomethylsilane is rearranged into soluble one.
