Rare earth stabilized zirconia (RESZ) is one of the most important ceramics with unique mechanical,牙齒矯正, processible,牙周病, and biocompatible performance. However, the recent industrial process only meets the requirements for producing the bulk materials. Because of the nature of RESZ materials, it is difficult to control the structure and particle size exactly by the solid-state reaction.
In this study, the monodisperse, tetragonal-phased yttria stabilized zirconia (YSZ) nanoparticles with ca. eight nm of diameter were fabricated via a two-step hydrothermal reaction. The preparation process was optimized to meet the scale-up in industrial. A thin silica layer of ca. 5 nm was coated onto the as-prepared nanoparticles, which may improve the aesthetic appearance of the ceramic and lower the difficulty of processing,牙周病, as well as reduce the cost. The silica layer was modified on the YSZ nanoparticles according to Stöber method,牙齒矯正, and this process can be scaled up to 1 L. The molding and processing of as-prepared nanoparticles are also studied by an isostatical process combined with a sintering treatment.
This work provides a method to fabricate monodisperse and tetragonal YSZ nanoparticles with lower cost and environmental-friendly. By optimizing the reaction condition, this process is easy scaled up into industrial production, and the nanoparticles are satisfied to the application of dental restoration.