ZYBF Zirconia Loose Fibre 2,300 °C

Loose ZYBF Zirconia Fibre, heat-resisitant up to 2 300 °C

Bulk Fibers Type ZYBF are available in three different forms, all having useful properties up to 2,200 °C. These polycrystalline fibers can be vacuum formed into rigid shapes, placed into cavities as loose fill insulation, or added to ceramic bodies and coatings for reinforcement.

Manufacturing of Loose Zirconia Fibre

All three ZYBF types are made using the original Zircar Process by Zircar Zirconia. This process uses microphagia to transforms an organic fibre into a ceramic fibre. 

ZYBF is 6 to 10 microns in diameter, is nearly 100% zirconia phase stabilized with 10 % yttria. The yttria stabilizes the tetragonal / cubic structure by preventing the monoclinic to tetragonal crystal transformation that occurs at 1,170 °C in pure un-stabilized or insufficiently stabilized zirconia. This undesirable transformation causes an 11 % volume change in the crystal unit cell size that can cause micro-cracking and reduced physical strength in the bulk solid. 

Yttria stabilized zirconia is an electrical semiconductor at elevated temperatures. This conductivity arises from the different valences of ionic Zr4+ and Y3+. Electricity is conducted at elevated temperatures (700 to 800 °C) as oxygen ions are induced to flow through the stabilized zirconia structure. This phenomenon forms the basis of zirconia oxygen sensors.

     Main Applications of Loose Zirconia Fibres

• Can be use to forming rigid shapes
• Can stabilize ceramic fibre products that have been formed in vacuum atmosphere
• Can be added to Zirconia Cement Type ZR-CEM and used as a coating or as a filler for holes, bonding of matched surfaces, and repairing cracks and openings in furnace walls composed of zirconia insulation
• Can be placed into cavities as loose fill insulation or used as furnace packing
• Can be used as thermal insulation in industrial furnaces 

Benefits of Loose Zirconia Fibres

• Low thermal conductivity
• Temperature rating to as high as 2,200 °C
• Phase stabilized with 10 wt. % yttria
• High purity
• 100 % inorganic, no off-gassing or odors
• Excellent in corrosive, oxidizing and reducing atmospheres
• Extremely low silica content
• Non-rcf, asbestos free
• Usable in multiple atmospheres

General Data on Loose Zirconia Fibres

Technical Data on Loose Zirconia Fibres

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.