Introduction to Zirconia Ceramic Crucible

Introduction to Zirconia Ceramic Crucible

The purity of zirconia ceramic crucible reaches 99.9, the density is 6.00, and the maximum operating temperature is 2200 degrees. It is mainly used for melting precious metals and has good thermal stability.

The main purpose of ceramic crucibles is to melt precious and rare metals.

Zirconia ceramic crucibles have good high-temperature stability and are ideal experimental high-temperature refractory products.

The melting point of Zirconium dioxide is higher than that of zirconium, up to 2700 ℃. It is one of the best fire-resistant materials in nature.

Its thermal conductivity is poor, but it has strong conductivity and corrosion resistance. Even when heated to over 1900 degrees Celsius, it will not react with molten metals such as aluminum, iron, nickel, platinum, silicates, and acidic slag.

Therefore, it can be used to manufacture crucibles, refractory tubes, heat-resistant glass, and heat-resistant enamel for melting precious metals. Adding Zirconium dioxide to enamel and glass can make them more resistant to acid and alkali corrosion.

The high temperature furnace lined with Zirconium dioxide will not increase much in volume after heating, and the temperature change will have little impact on it. The furnace body will not crack due to Thermal expansion, which can greatly extend the life of the furnace.

With Zirconium dioxide as refractory and 5% Yttrium(III) oxide as stabilizer, its heat resistance temperature is 500 degrees higher than that of alumina, and its thermal insulation capacity is three times higher than that before addition.

Adding white Zirconium dioxide into ceramics can make ceramics whiter, brighter, more heat-resistant, and have increased strength. Using this kind of ceramics to make high-temperature insulating porcelain bottles has strong insulation capacity and small expansion coefficient.

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