Logo tutelle CNRS
Logo tutelle Ensicaen
Logo tutelle Unicaen
Logo Labex EMC3
Logo Carnot


Sur ce site

Sur le Web du CNRS

Intranet Webmail

Accueil du site > Divers > equipes de recherche > Matériaux Fonctionnels et de Structure (MFS) > Equipements > Fours > Four micro-onde >

4 juin 2008

Description :

The microwave processing system configuration, shown below, comprises a microwave generator and a standard R26 rectangular waveguide (a = 86.36 mm and b = 43.18 mm), which is equipped with two circulators and terminated by a symmetric cavity. Two different resonance modes (TE102 which permits an interaction with the magnetic field and TE103 which permits an interaction with the electric field) can be generated..




Few characteristics :


Generator :

Frequency : 2.45 GHz
Power generated : 0 – 2 kW






Circulators :

Phillips D2C located just after the generator absorbs the reflected power from the stub.

Tekelec Airtronic N 00057 placed after the stub absorbs the power reflected by the cavity.





Possibilties :

Texturation of material like (RE)Ba2Cu3O7-d with single domains. The following picture shows taken during the sintering process of a BaTiO3 sample surrounded by a LaCrO3 susceptor.





Nowadays the sintering of advanced materials such as core shell ceramics or nanosize ceramics requires very fast sintering method in order to avoid both grain growth and interdiffusion. In this context, the microwave sintering is a very powerful method since it allows sintering in a very short time (several minutes). The successful microwave sintering of core shell grains, like BaTiO3 grains covered with a nanosize silica layer, undoubtedly illustrates this point.


Contact : Sylvain MARINEL




Back to home page