Zirconia ceramic is white, including impurity yellow or gray, typically contains HfO2, is not easy to separate. Under ordinary conditions of pure ZrO2 there are three crystal. Zirconia ceramics production request preparation high purity and good performance, scattered particle super fine narrow particle size distribution, the powder, zirconium oxide superfine powder preparation method are many, the purification of zirconium oxide mainly chlorinated and thermal decomposition method, alkali metal oxidative decomposition method, lime melting method, plasma arc method, precipitation, colloid method, hydrolysis method, spray pyrolysis, etc.
Zirconia ceramic has high toughness, high bending strength and high abrasion resistance, excellent insulation properties, thermal expansion coefficient close to steel, so it is widely used in the field of structural ceramics, such as Y-TZP ball, dispersion and grinding media, nozzles, valve ball seat, etc. Zirconia ceramic with a high-temperature performance, is used as the induction heating pipe, refractory, heating elements. Zirconia ceramic is with sensitive electrical performance parameters, mainly used in oxygen sensors, solid oxide fuel cells (SolidO xideFu elCe ll, SO FC) and high-temperature heating body and other fields.
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