Electrical Discharge Machining of Silicon Carbide Ceramic of Plane Processing

Silicon carbide (SiC) has high specific stiffness, high thermal conductivity, and a low thermal deformation coefficient, making it highly applicable in the aeronautic and astronautic industries. However, the beneficial properties of high hardness and high strength cause problems in shaping SiC blanks. Electrical discharge machining (EDM) is a popular unconventional machining process for producing hard and brittle materials. An experimental investigation was conducted on the improved technologies of EDM. A good surface was obtained through plane processing using graphite as an electrode.