Saint-Gobain ZirPro
Saint-Gobain ZirPro

Zirconia Powders

Saint-Gobain ZirPro is a world leader in the manufacturing of zirconium oxide powders, for more than 30 years.

Zirconium Oxide (Zirconia) Powders – ZrO2


Three main manufacturing processes for Saint-Gobain ZirPro zirconia powders:

  • Fusion and reduction of zirconium silicate (zircon sand): fused zirconia powder (ZF)
  • Original process based on zircon sand fusion and chemical treatments: thermal zirconias (CC, CS)
  • Chemical processes from zirconium oxychloride (ZOC): chemical zirconia powders (CZ, CZE, CYZ) and zirconium hydrates or hydroxides (ZHO).


This gives Saint-Gobain ZirPro a unique and strong position, for the development and the manufacturing of a complete range of zirconium oxides, in terms of:

  • Chemical purity: from 98.5% (fused and thermal zirconias) to 99.95% (chemical zirconias)
  • Particle size distribution: the mean particle size of the zirconia powder (D50) varies from several hundreds of microns to less than 1 micron (typically 0.3 micron).
  • Specific surface area (or “reactivity”): the reactivity varies from 1m²/g for the fused zirconias to 250 m²/g for the zirconium hydroxides.
  • Dopants: some dopants can be added to the zirconium oxide powders in order to modify or improve:

             - The crystallographic structure: magnesium oxide (MgO) or yttrium oxide (Y2O3) are added to the zirconia powder, in order

                to stabilize the tetragonal and/or cubic phase. Without any dopant, the zirconia powder has a monoclinic structure

             - The surface properties of the zirconium oxide powder, specific surface area, porosity, acidity

             - The color of the final ceramic: special colored zirconias have been developed, in order to obtain colored

               dense ceramics.


Applications of Zirconia Powders


For almost every application using zirconium oxide, Saint-Gobain ZirPro can propose or develop a solution adapted to your needs:

  • Zirconium silicate based ceramic pigments, used in tiles, glazes, sanitaryware
  • Refractory ceramics, molten metal filters
  • Glass and gemstones composition
  • Electronic ceramics: PZT, multi layer ceramic condenser (MLCC), Dielectric components
  • Thermal spray powders (TSP), thermal barrier coatings (TBC)
  • Structural ceramics for the industry: valve components, wear & abrasion resistant components, milling medias,…
  • Dental ceramics
  • Consumer and decorative ceramics: watches, knifes, mobile phones,…
  • Ionic conductive ceramics: gaz sensors, solid oxide fuel celles (SOFC)
  • Catalysis: petrochemical and automotive catalysis


Please contact us for further information, product datasheets or MSDS.