Casting
The tape casting method is a very important ceramic substrate molding process. The AlN powder and the composite binder (composed of dispersant, solvent, binder and plasticizer) are evenly mixed to obtain AlN cast slurry. After degassing and other processes, the slurry is poured into the hopper and passed through the scraper. After opening, a thin layer with uniform thickness and smooth surface attached to the smooth belt is formed, and then dried to prepare a green body with good toughness; after debinding and sintering, an AlN substrate material is obtained. This process is mostly used to make aluminum nitride ceramic plates or substrates.
Dry Pressing
Dry pressing is a process of adding AlN powder pretreated by surfactant modification to a metal mold, and slowly applying pressure to make it a compact green body molding process. The essence is to rely on external pressure and the interaction between AlN powder particles to keep the green body in a certain shape and high density. It is conducive to ceramic sintering, can reduce the sintering temperature, and increase the density of ceramics.
If you have any questions on aluminum nitride sheet. We will give the professional answers to your questions.