Abstract
Wire-EDM has evolved as one of the latest machining techniques for fabrication of micro-components of advanced structural ultra high temperature ceramics. Hot-pressed zirconium diboride (ZrB2) based composites containing 5-20 wt% silicon carbide (SiC) have been sintered and investigated to determine the effect of the amount of SiC addition in ZrB2 on the electrical properties and machining parameters. Keeping the input parameters fixed, the machining performance in terms of material removal rate and surface roughness has been studied. As expected, it has been observed that with the increase in percentage weight of SiC, material removal rate decreases because the resistivity of the composite increases.
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