Share this page by mail High Temperature Zirconia Fibre Felts 2,100 °C
Zirconia Fibre Felt, up to 2,100 °C
The zirconia fibre felts provided by Final Advanced Materials are made of 100 % zirconia fibre with a diameter ranging from 4 to 6 µm, stabilised with 10 % yttrium oxide. They are entirely composed of inorganic fibres and contain no binder. The zirconia fibre has an extremely low thermal conductivity.
ZYF needled felts offer high resistance to extreme temperatures. They can withstand operating temperatures up to 2,000 °C and peak temperatures up to 2,100 °C. Designed for highly corrosive environments and high-temperature applications, they don’t react to alkaline vapour, salts or hot and concentrated solutions. Moreover, they remain efficient in highly oxidising and reducing atmospheres. They don’t wet in contact with most molten metals.
These lightweight and very porous felts are effective thermal insulators for crystal growth furnaces, for separators in electrolytic cells or for loading supports. They can be easily cut for custom applications.
For more information regarding the availability, refer to the technical data sheet.
Applications of Zirconium Oxide Fibre Felts
- Thermal insulation of crystal growth furnaces
- Thermal insulation of separators for electrolytic cells
- Thermal insulation of loading supports
- Custom applications
General Data of Zirconia Fibre
Technical Data of High-Temperature Zirconia Fibre Felts
Physical variables included in this documentation are provided by way of indication only and do not, under any circumstances, constitute a contractual undertaking. Please contact our technical service if you require any additional information.
FAQs that can help you in this category
Felts made from carbon/graphite fibre are excellent at withstanding high temperatures, and are used up to 3,000°C. These felts are stable up to 2,000°C, but only in an inert, oxygen-free environment. Otherwise, they oxidise above 300°C. Unlike carbon/graphite felts, zirconia felts are resistant to temperatures up to 2,000°C, even in the presence of oxygen in the environment.
Final Advanced Materials' biosoluble fibre felts are a safe alternative to replace asbestos-based insulation or other refractory fibres. These fibres have low biopersistence, meaning the body can eliminate any inhaled fibre rapidly and naturally. These felts have a low thermal conductivity and a temperature resistance of up to 1,400°C, and are used primarily as oven coatings, but also as a customisable local thermal insulation.
The only felts capable of withstanding a continuous exposure to temperatures exceeding 1,500°C are ceramic (Al2O3), zirconia (ZrO2) or graphite fibre-based felts. Each felt has specific constraints: graphite felts can only be used in an inert atmosphere or in a vacuum, while zirconia felts have poor mechanical properties, and ceramic fibre felts can only resist temperatures up to 1,650°C.
The other felt families (glass, silica, biosoluble, RCF, basalt, etc.) cannot withstand a continuous exposure to more than 1,260°C.
The material has a thermal conductivity of 0.06 W/m·K at 200°C, and 0.30 W/m·K at 1,000°C. It is substantially lower than that of conventional refractory materials (often between 1 and 2 W/m·K at these temperatures). The felts offered by Final Advanced Materials are available in several densities, ranging from 64 to 160 kg/m3. The higher the density, the lower the conductivity which can go as low as 0.20 W/m·K at 1,000°C.