Zirconia powder is also called nano-dioxyhaul zirconium, chemical formula ZrO2, is the main oxide of zirconium, usually white odorless and tasteless crystals, insoluble in water, hydrochloric acid and dilute sulfuric acid. Its chemical properties are not active, and it has the properties of high melting point, high resistivity, high refractive index and low thermal expansion coefficient, which makes it an important high-temperature resistant material, ceramic insulation material and ceramic sunshade, and is also the main raw material for artificial drilling.