| This paper introduces the methods by adding a stable monoclinic zirconia into a partially stabilized zirconia, this study investigated a single stabilizer on the stability of monoclinic zirconium oxide effects and rules, introduced quality products in the stabilization of zirconia content on the rate of product the impact of thermal shock resistance. For the raw material type, origin of the products of different properties have different effects have also done a brief description.As the iron and steel smelting technology, steel demand, domestic steel production enterprises to adjust product structure, Some depth flush, ultra flush and so on deeply the ultra low-carbon steel development already the inevitable trend which will become develops in the future. These high value-added steel products, molten steel in the refining process required minimal use of carbon refractories, traditional carbon refractories have not meet requirements. In addition, for the production of steel in terms of high calcium, high temperature, due to calcium and easy to use carbon ladle refractories (Al-C sliding) of Al2O3 reaction of calcium aluminate with low melting point, making the life of large aluminum carbon skateboard reduced, it is difficult to meet the needs of normal production. As the molten ZrO2 material with and without infiltration, erosion resistance and other properties, so instead of using zirconium carbon refractory material is ideal.As the zirconium high quality products, sintering temperature, and poor thermal shock resistance, the domestic production of 95%-ZrO2 skateboarding generally is used CaO as stabilizer, the products is poor thermal shock resistance, easy to crack during use, once a number of not more than twice. Therefore, the development of thermal shock resistance is not low four times 95%-ZrO2 skateboard, you can save the cost of steel smelting and reduce labor intensity. Zirconia has a high refractoriness, resistance to corrosion and erosion of liquid steel and other excellent features, but of pure zirconium oxide products is not easy to manufacture. This is mainly because zirconia to room temperature from high temperature phase transition occurred, about 5-6 percent of the volume expansion, is difficult to obtain a complete structure of the fired product. Add in some metal oxides ZrO2, the cation radius and Zr4+ radius are close, can under certain temperature monoclinic to tetragonal zirconia, cubic transformation, these metal oxide cation solution to the tetragonal, cubic crystal structure, the temperature is lowered, it can inhibit the square, cubic crystal structure to monoclinic transformation, to stabilize the lattice effect, known as zirconia stabilizer, such as Y2O3; CaO, Al2O3, MgO, CeO2, etc. These oxides form a solid solution with ZrO2 or complex, by changing the internal structure of crystals, and ZrO2, lattice defects, thus inhibiting the occurrence of the phase transition, which was intact structure of zirconia products. Currently, the market's stabilized zirconia as Y2O3, CaO, stable, unstable quality of raw materials, which develop and produce excellent thermal shock resistance of zirconium quality skateboard is a certain degree of difficulty. Therefore, this study from by adding stabilizer, the stability of monoclinic zirconia as part of the square, cubic crystal structure of stabilized zirconia, and then use it as the main raw material research and development of zirconium skateboard.Experiments described add Y2O3, CaO, MgO of stabilized zirconia were studied using a single stabilizer, at different sintering temperature, the type and content on phase stability and stabilization rate and stable raw materials and bulk density were Porosity. Finally, to determine the stability of skateboard products was 35-55 percet monoclinic zirconia for the Australian production of zirconium chemicals, stabilizers Y2O3, CaO. Strict manufacturing process, developed a thermal shock resistance of zirconium of not less than fourth skateboard.
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