Influence of sintering method on alumina ceramic tube
Influence of sintering method on alumina ceramic tube
Alumina ceramic tubes intering is a key stage of ceramic preparation, and the sintering atmosphere has a great influence on the preparation of ceramic materials. Too high sintering temperature or too long holding time will promote crystal growth, so that the fine raw materials will develop into coarse grains at high temperature, and the amount of liquid phase will increase. This will not only decrease the strength, but also weaken the wear resistance. Of course, if the temperature is too low, the sintered body will not be dense, and the wear resistance of the product will not be good.
Alumina ceramic tubethe use of advanced electric kiln sintering can control the heating, heat preservation and cooling process of sintering, and play an important role in improving the performance of wear-resistant ceramics. However, the sintering cost of electric kilns and the consumption of refractory materials are higher than that of gas kilns and coal kilns.
Burning aid
A suitable sintering aid reduces the sintering temperature, improves the microstructure of the ceramic, improves the mechanical properties, and further improves the wear resistance of the alumina ceramic tube
