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ZrO2 Introduction

Pure ZrO2 is a white solid. It may appear gray or light yellow if it contains some impurities. It can display other colors as it adds developer. There are three zirconium crystal forms: monoclinic, tetragonal, and cubic. Zirconium material is with many good characteristics including high hardness, high strength, high toughness, high wear resistance and excellent chemical resistance. ZrO2 has been widely used in many fields like ceramics, refractory materials, machinery, electronics, optics, aerospace, biology, chemistry, etc. Compared with traditional dental ceramic materials, yttrium oxide (Y2O3) as a stabilizer of tetragonal ZrO2 grain flour (t-ZrO2) polycrystalline ceramics (Y-TZP) due to the presence of metastable tetragonal ZrO2 to monoclinic ZrO2 (m-ZrO2) the role of stress-induced phase transformation toughening, high toughness, and has been widely concerned by people. ZrO2 grain powder is an excellent high-tech biological material. So far ZrO2 is the best one recognized by dental society both in price and quality for denture or false teeth production.