Description/Applications
Calcia Stabilized Zirconia is a fused, partially stabilized zirconia, available as a dense grain, as a hollow bubble, and as a powder.
- The dense grain has long been considered the world’s premier refractory zirconia. It is double fused, then calcined, which produces a dense, crack-free, volume-stable grain. The low silica content ensures a minimum glassy phase content and resistance to penetration by slags and molten metals in the most hostile environments. It is used as a primary component in the manufacture of refractories for the continuous casting of steel, for kiln furniture used to fire electronic ceramics, for crucibles used for precious metal melting, and as an additive to increase the thermal shock resistance of dolomite refractories.
- The bubble is frequently used as a bulk high temperature thermal insulation, primarily in induction melting furnaces. It is also the primary component of insulating zirconia brick used in the production of fused quartz.
- The powder is used as a ceramic binder for the dense grain and bubble in most refractory formulations and as a face coat in ceramic molds for the investment casting of titanium.
Grain, bubble and powder are available in a variety of sizes tailored to meet your specific requirements. All zirconia is produced from low urania/thoria zircon.
Typical chemical analysis
| Zirconia + Hafnia | ZrO2 + HfO2 | 95,60 % |
| Hafnia | HfO2 | 1,70 % |
| Magnesia | MgO | 0,05 % |
| Silica | SiO2 | 0,20 % |
| Calcia | CaO | 3,50 % |
| Titania | TiO2 | 0,20 % |
| Iron Oxide | Fe2O3 | 0,05 % |
| Alumina | Al2O3 | 0,40 % |
| Uranium + Thorium | U + Th | <500 ppm |
The information contained in this document is believed to be accurate and reliable but it is presented without guarantee or warranty on the part of producer nor supplier. Further, nothing presented herein should be interpreted as an inducement to practice invention without an appropriate license.