The Mechanical properties on Y3A15012 sintering additives of structural ceramics

Full text of publication follows: In the present work, structural ceramics was fabricated with Y3Al5O12 as sintering additive and its mechanical properties were investigated. The structural ceramics with 3, 5, 7 wt% of Y3Al5O12 as sintering additive was prepared and sintered by a Hot Pressing (HP) technique at 1750, 1800 deg. C for 2 hours. The Process was fulfilled under different process pressures of 30, 45 MPa respectively. The mechanical properties and microstructures were investigated as a function of Y3Al5O12 contents in structural ceramics. As increasing amount of Y3Al5O12 in structural ceramics, density, strength and fracture toughness were increased slightly. It showed similar mechanical properties compared with structural ceramics materials. But its elevated temperature strength was higher than structural ceramics materials. (authors)