Abstract
AbstractIn recent years, material science has made a great progress, especially in the field of ceramic materials for the development of highly reliable, cost-effective and economically good components in the military, aviation, nuclear energy, biological and industrial fields. Among the unconventional machining processes, electrical discharge machining (EDM) is a more popular and versatile process than any kind of conventional machining process and it has been used to manufacture complex and contour shapes in conductive materials. The principle of electrical discharge machining is that, thermo electric energy is used to remove the material by any one of the metal removal mechanisms. EDM is usually used in production of cutting tools and fabrication of mold to process alloy steel, heat treated steel and advanced materials such as super alloys, metal and ceramic matrix composite materials, which require precision machining of complex shapes with high surface finish. This paper reviews the development of conductive ceramic materials from its origin to the present situation in order to face these challenges and obtain higher degree EDM parameters, optimizing the machining parameters of conductive ceramic composites of Si3N4-TiN, MoSi2-SiC, alloy of zirconium ceramic such as ZrO2-TiN, ZrO2-SiC-TiN and alloy of alumina such as Al2O3-TiC-TiN and TiN-Al2O3.KeywordsEDMConductive ceramic compositesOptimizationSEMANOVA
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