Calciastabilized

Calciastabilized, sometimes written calcia-stabilized, describes a material whose crystal structure or phase is stabilized by calcium species, most commonly calcium oxide (CaO). The term is especially used in reference to calcium-stabilized zirconia (Ca-stabilized ZrO2), a doped zirconia system in which CaO helps retain a high-temperature tetragonal or cubic phase at room temperature.

In Ca-stabilized zirconia, calcium is introduced into the zirconia lattice, and a secondary calcium zirconate (CaZrO3) phase may form as a byproduct. The stabilization effect depends on dopant level, impurities, and processing conditions, and it influences properties such as phase stability, grain size, toughness, and aging resistance.

Production typically involves mixing zirconia powders with calcium-containing additives, followed by calcination, milling, forming, and sintering to dense polycrystalline ceramics.

Applications of calciastabilized zirconia include advanced ceramics for structural components and coatings, and in dental materials research as an alternative stabilizer to yttria or magnesia. Compared with other stabilized zirconias, Ca-stabilized variants can exhibit different thermal expansion, fracture toughness, and aging behavior, making them of interest for specific engineering needs.

See also: Stabilized zirconia; yttria-stabilized zirconia; magnesia-stabilized zirconia; calcium zirconate; zirconia-based ceramics.