Investigation on spark electrical discharge machining of Si3N4 based advanced conductive ceramic composites

Ceramics are increasingly being used in aerospace, and have been used in the engineering industry for many years. Because ceramic is generally lighter than metal alloys, EDM has long been used for conductive ceramic materials for their forming complex shaped holes and design of all kinds of industrial applications. Furthermore, a considerable number of engineering challenges can be expected regarding the processing of ceramic materials on a percentage of composition level. In order to examine the investigation of the material removal mechanism and surface topography at a different processing temperature in the limit of high-temperature 1200–1600 °C of silicon nitride (Si3N4) based advanced ceramic composites (ACC) and analyzing various process parameters of spark EDM. Establish the relationship between the geometrical tolerances, crack behavior, Thermal spalling, pores and craters were investigated. Furthermore, the advantage, disadvantage, application, and productivity introduced conductive ceramic composites has been explored. In this work we reviewed the EDM characteristics of Si3N4-TiN and Nickel-Titanium alloys and also comparative analyses of the microstructure; hardness and composition of Electrical discharge machined surfaces were discussed.