Fused Zirconia Tubes

Semicorex Fused Zirconia Tubes are high-quality ceramics made from very pure (high-purity) magnesia-stabilized zirconia (MgO-PSZ / MSZ) and have been developed to perform well under extreme thermal and chemical conditions. These tubes are highly regarded for their excellent ability to perform in high temperature and high corrosion environments, for example, high temperature furnaces, systems where the molten metal comes into contact with the tube, and in chemical processing equipment used in industrial applications.

Zirconia naturally has a high melting point; and through the use of an oxide (MgO), the MgO-stabilizing effect allows the Semicorex fused zirconia tubes to provide the best combination of mechanical strength, thermal shock resistance, and chemical corrosion resistance. Compared to traditional alumina tubes or other commonly used refractory materials, the MSZ zirconia tubes will have greater resistance to cracking due to thermal shock from repeated rapid cycles of heating and cooling; therefore, they are ideal for long-term use in severe service applications.

What Is Magnesia-Stabilized Zirconia (MgO-PSZ / MSZ)?

Magnesia-Stabilized Zirconia is a ceramic comprised of zirconium oxide that has been stabilized with magnesium oxide (MgO); the stabilizing agent improves toughness by preventing phase change cracking at high temperatures and provides a substantial improvement in durability.

Magnesia Stabilized Zirconia is widely used in applications for both industrial furnace systems, metal processing, and chemical environments, as the material retains its structural integrity under high thermal loads and resists chemical attacks from various slag sizes and molten materials, in addition to aggressive process atmospheres.

The high-purity raw materials selected and the fused manufacturing process employed by Semicorex create a consistent, uniform microstructure with high density and repeatability.

Typical Applications of Fused Zirconia Tubes

Semicorex fused zirconia tubes are widely used across industries requiring stable performance under high temperature and corrosive conditions, including:

Metallurgy and Foundry

Molten metal handling systems

Slag-resistant ceramic components

High-temperature protection sleeves

Furnace lining and support parts

Thermocouple Protection Tubes

Zirconia tubes are commonly used as thermocouple protection sheaths, especially in furnaces with corrosive atmospheres or molten metal splashing risk. Their density and thermal stability ensure accurate measurement and longer operational life.

Glass and Ceramic Processing

High-temperature kiln fixtures

Tube components for glass melting furnaces

Corrosion-resistant ceramic sleeves

High-Temperature Industrial Furnaces

Heat treatment furnace assemblies

Sintering furnace insulation parts

Tube reactors and thermal processing equipment

Chemical and Energy Industries

Ceramic tubes used in corrosive gas flow systems

High-temperature filtration housings

Thermal barrier components