Machinable ceramic composite material having a low coefficient of thermal expansion and manufacturing method thereof

摘要

The present invention is a machinable ceramic composite and a manufacturing method thereof, in detail, the machinable ceramic composite includes sialon (SiAlON), boron nitride (BN), zirconia (ZrO ₂ ) and yttria (Y ₂ O ₃ ). In that, the sialon is included in 30wt% to 60wt%, the boron nitride is included in 35wt% to 60wt%, the zirconia is included in 0wt% to 10wt%, and the yttria is included in 5wt% to 10wt% It characterized in that it is included.