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Structural Ceramics High Refractive Index

Hangzhou JWG Technology Co.Ltd | Updated: Jul 03, 2017

Zirconia ceramic structural parts of high melting point, Structural Ceramics high resistivity, high refractive index, low coefficient of thermal expansion, it has become a remarkable product in our lives. But many people do not know the zirconia structural parts of the production methods, in fact, Structural Ceramics this is also very important.

Dipping method: the first viscose silk or the whole fabric for a long time immersed in zirconium hydroxide solution, the viscose fiber swelling, and then by pyrolysis, Structural Ceramics calcination to get a certain tensile strength of zirconia fiber.

Oxidation of zirconium oxychloride: zircon and caustic soda at 650 ℃ melting, hot water leaching melt, silicon was sodium silicate form and sodium zirconate separation. Structural Ceramics And then treated with sulfuric acid, zirconium sulfate solution, and further impurities in addition to ammonia, precipitation of zirconium hydroxide.

Sol-gel method: adding alcohol and water to the zirconium alcohol, Structural Ceramics adding the catalyst, and after the mixture is fully mixed, it is decomposed and put into gelatinized and viscous liquid. The proper viscosity is chosen, Structural Ceramics dried and then heated to 500 to 1000C The temperature of the fiber is fired into the product.

Hydrolysis: Preparation of high purity ultrafine zirconia from zirconia structural material as raw material, 0.2 to 0.3 mol / L of high purity zirconium oxychloride solution and deionized water were hydrolyzed and the zirconium oxychloride solution was boiled for a long time Hydrolysis of hydrogen chloride generated by evaporation, Structural Ceramics the hydrolysis reaction in boiling for 50h or more, Structural Ceramics and then filtered, washed with deionized water, dried, calcined crushed to obtain the product.

High temperature hydrolysis method: 1mol / L Structural Ceramics high purity solution into the temperature of 1000 ℃ in the decomposition furnace, the tiny zirconia ceramic structure droplets first water evaporation, and then hydrolysis to produce zirconium dioxide. The decomposed zirconia is collected by the cyclone separator, and then the acid is washed, washed and dried to obtain the product.

Zirconia structural parts of the raw material production method is the alkoxide hydrolysis method, the law can be obtained particle size and shape uniform, Structural Ceramics single phase structure of ZrO2. Master the knowledge, you will be in the production of raw materials will be simple, and can indirectly improve the quality of the product.

Since the thermal conductivity of zirconia is low and the thermal expansion coefficient is large, the thermal stability of the zirconia product is poor. Structural Ceramics It is preferable that the ceramic product obtained from the zirconium oxide raw material composed of the partially stabilized zirconia raw material has the best thermal stability. Structural Ceramics So the manufacture of zirconia ceramic structure is often used to stabilize the zirconia raw material rather than the whole stable zirconia raw materials. Structural Ceramics Production of zirconia ceramic structure generally with 3mo1% Y203 stable zirconia ultrafine powder.

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