Zirconia (ZrO2) is unique among the fine ceramic oxide group due to its exceptional fracture toughness and thermal expansion properties. As a result, zirconia ceramics are widely used as a specialist solution in hard-wearing and high temperature applications. ZrO2 ceramics come in a range of grades and formats to satisfy the extreme requirements of these demanding markets.
Zirconia: Grades, Formats & Bonding Types
Owing to the high cost of pure zirconia, compared to fine ceramics like alumina (Al2O3), ZrO2 ceramics are typically formed with additional components. Alongside material cost reductions, these additives or stabilizers can provide additional functionality benefits. High purity (90.0%) oxide-bonded zirconia solutions are available in the pressed, cast, or blended conditions for applications requiring the highest standard of thermal shock resistance available.
Zirconia refractories have a very high strength at room temperature which is maintained up to temperatures as high as 1,500°C. They are, therefore, useful as high temperature construction materials for furnaces and kilns.
Markets requiring higher corrosion resistance or greater hot mechanical strength typically use a system of zirconia with alumina or chromium oxide (Cr2O3), or a complex combination of all three. The compositional ratios of these compounds can be finely tuned to provide a material with the best-trade-off between mechanical and corrosion resistance for specific applications.
Saint-Gobain is one of the world leading zirconia ceramic suppliers, providing finely-tailored ZrO2 solutions under a series of trusted product brands.
- Wear Resistance
- High Strength
- Electrical Insulation
- Low Thermal Conductivity
- High Fracture Toughness
- High Hardness
- Corrosion Resistance
Wear Resistant Technologies
Saint-Gobain Performance Ceramics and Refractories have developed a range of wear resistant technologies using alumina oxides (Al2O3 and ZTA) as well as next-generation silicon carbides (SiC) including nitride bonded, reaction bonded, and sintered silicon carbides.