Talk About Low-temperature Sintering Technology Of Alumina Ceramics

Since the melting point of alumina is as high as 2050 ° C,the sintering temperature of alumina ceramics is generally high,so that the manufacture of alumina ceramics requires the use of high-temperature heating elements or high-quality fuel and high-grade refractory materials for kilns and kiln furniture.To a certain extent limits its production and wider application.

Therefore,reducing the sintering temperature of alumina ceramics,reducing energy consumption,shortening the firing cycle,reducing the loss of kilns and kiln furniture,and thus reducing production costs,has always been an important issue that companies are concerned about and urgently need to solve.

The current low-temperature sintering techniques of various alumina ceramics can be summarized,mainly from three aspects of raw material processing,formulation design and firing process,and the measures are summarized below.

Decreasing the sintering temperature of porcelain body through doping and doping of porcelain formula

The sintering temperature of alumina ceramics is mainly determined by the content of alumina in its chemical composition.The higher the alumina content,the higher the sintering temperature of the porcelain.In addition,it is also combined with the porcelain composition system,each composition ratio and Additive type.

Therefore,on the premise of ensuring that the porcelain body meets the product use purpose and technical requirements,we can choose a reasonable porcelain material system through formula design,add appropriate firing additives,and reduce the sintering temperature of alumina ceramics as much as possible.