Low temperature sintering of Al2O3 according to the amount of Bi2O3 additive considering economics

Structural ceramics are generally superior in strength to metal at high temperatures. However, they must be sintered at high temperatures to achieve this high strength. Therefore, lowering the sintering temperature would have economic benefits, including in terms of energy consumption. This study investigated the possibility of reducing the sintering temperature by adding bismuth oxide(Bi2O3) to the sintering of aluminium oxide(Al2O3). The amount of Bi2O3 additive was changed to 12 similar to 19.1 wt.% and the sintering temperature was in the range of 850 similar to 1200 degrees C, and the compressive strength was evaluated under these conditions. The addition of Bi2O3 can decrease the necessary sintering temperature by about 400 degrees C. Ceramic structures that can be low temperature sintering can save costs due to reduced manufacturing costs, replacement costs, shutdowns, etc., which will ensure enormous economic efficiency.