Tetragonal zirconia piezo ceramics

Based on the phase transformation toughening effect, tetragonal zirconia is today the highest room temperature mechanical properties of advanced ceramic materials, not only widely used in machinery, chemical industry, but we are using the best ceramic fiber connector ferrule and sleeve fiber optic network material is the most mainstream material. Such high-precision products of complex shapes, sizes required near net injection molding method preparation. But zirconia powder injection molding must have a high sintering activity, while the powder should be mixed with organic matter and easy and has a high solid content, that has a low specific surface area. And these two often conflicting requirements, such as good sintering properties, require fine powder particles, high specific surface area; contrary such as increasing the particle size, surface area decreased but the sintering performance. The project co-precipitation method of high specific surface area from the domestic departure zirconia powder, invented the high sintering activity is lower than the surface area of the zirconia powder, combined with the original organic-based formulations of domestic raw materials, the successful resolution of the use made of zirconium oxide powder at low cost body of technical problems, such as injection molding, precision ceramic ferrule manufacturing complex shapes of products, improve our tetragonal zirconia ceramics technology. The project includes complete with homemade organic raw material for injection formulations, as well as the formulation and lower than the surface area of the high sintering activity zirconia powder uniformly mixed, injection molding and degreasing and sintering technology and related application technology. The project's products reach the advanced level of similar foreign products.