Zirconia Ceramic Disc

 

The process of zirconia ceramic disc:

First: zirconia ceramic disc simple degreasing is simply through heating. Organic matter can be separated from the green body of the ceramic by other methods. Degreasing is a very important process in the whole production process. It is a critical link for the subsequent sintering of zirconia ceramic disc. If this link is not well controlled, it will lead to porosity or microcracks in the green body. Therefore, the requirements for degreasing in zirconia ceramic firing are also very high.

Second:the original powder is good or bad
Generally speaking, the higher the dispersion degree of zirconia ceramics, the higher its surface energy. This is more conducive to the subsequent sintering of zirconia ceramic disc. At the same time, in the full crushing process, fine particles can increase the driving force of sintering. They shorten the distance of atomic diffusion, and improve the solubility of particles in the liquid phase. Thus, they effectively improve the sintering rate.

Third:the quality of additives
Under normal circumstances, the addition of admixtures inhibits grain growth. However, under certain conditions the result is exactly the opposite. For example, zirconia ceramic disc in solid phase sintering, adding a small amount of additives can change the properties of the liquid phase (such as viscosity, composition). This can promote sintering.

Fourth:sintering temperature and holding time
The holding time of zirconia ceramics at sintering ambient temperature and high temperature is crucial for complete sintering of the green body. The larger the lattice energy in the crystal, the stronger the ion bond becomes. This makes diffusion of ions more difficult, and increases the required sintering temperature.

And the combination of various crystals is also different, so the sintering temperature is also very different. Even for the same crystal, sintering temperature will change with it. Welcome contact us.