Industrial microwave applications - low temperature rapid sintering of microwave dielectric ceramics

Microwave dielectric ceramics is developed in recent decades a new type of functional ceramic materials, manufacture filters, resonators, the key material is shifted microwave components and other items. With the development of Bluetooth technology, satellite communications, GPS positioning technology and other modern communications technology, people miniaturization of equipment, integration, high reliability and low cost and other aspects of the requirements and, therefore, of such dielectric ceramic material made more high performance requirements, such as proper dielectric constant, high Q value, the resonance frequency temperature coefficient approaches zero.

Influence of sintering process on dielectric ceramics performance is critical. By microwave sintering in a microwave field dielectric ceramic dielectric loss to achieve sintering temperature, sintering activation energy can be reduced to improve the diffusion coefficient, in order to achieve low-temperature fast sintering. Body heating, reduce the sintering temperature and shorten the time of sintering, to the maximum extent possible to maintain the crystallite size of the sintered body, so that the strength of ceramics, toughness and dielectric performance improved to varying degrees.

Microwave Sintering process compared with conventional ceramic sintering process has the following advantages:

1) Reducing the sintering temperature, sintering time shorter

2) A more uniform grain sintered product

3) Optimization of material properties

4) The precise control and non-polluting.

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