Alumina ceramic parts are generally what sintering methods?

Sintering method for alumina ceramic parts

1, activation hot pressing sintering

Activation sintering is a traditional sintering method, and activation hot pressing sintering is a new process developed on this basis.

If alumina ceramic ‍ manufacturers use this method to sintering alumina ceramic parts, reactants will have a relatively high energy activation state when the decomposition reaction or phase transformation occurs.

At this time, hot pressing can be used to obtain high density alumina ceramic parts. This process requires short time, low pressure and low temperature, so the sintering efficiency is high.

2. Ultra-high pressure sintering

If the use of ultra-high pressure sintering to sintering alumina ceramic parts, then alumina ceramic manufacturers need to sintering under the pressure of hundreds of thousands of atmospheric pressure ‍.

Using this way of sintering, not only can make the material quickly reach a high density, but also less than one micron fine grain and let the crystal structure of the electronic state change, so that the manufactured alumina ceramic parts do not have the performance of conventional sintering.

3, electric field sintering

 Alumina ceramics ‍ manufacturers can also use electric field sintering method, sintering ceramic body can be carried out under the action of direct current electric field, so that some components in the material.

 It can apply dc field to both ends of the body at sintering temperature, and then remove the electric field after cooling to a certain temperature, so as to obtain alumina ceramic parts with piezoelectric properties.