Zirconia fiber is the only high-grade lightweight refractory fiber material that can meet the requirements of long-term use in ultra-high temperature oxidizing atmospheres above 1500°C.
In terms of composition and structure, zirconia fiber is a polycrystalline refractory fiber material composed of pure tetragonal/cubic ZrO2 nano-ceramic grains. The purity (ZRO2+stabilizer) is >99.7%, the crystal must be a fully stable cubic phase, a continuous filament with a diameter of 3-8μm, and a white cotton-like appearance. Due to the high melting point (2700℃) of ZrO2 itself, non-oxidation and other excellent high-temperature properties, ZrO2 fiber has a higher use temperature than other refractory fiber varieties (such as alumina fiber, mullite fiber, aluminum silicate fiber, etc.), and has stable high-temperature chemical properties, corrosion resistance, oxidation resistance, thermal shock resistance, non-volatile, and pollution-free. It is currently the world's top refractory fiber material.
Zirconia fiber products are various profile products supported by zirconia fiber through deep processing and calcination.
Product features:
The use temperature is the highest. The melting point is as high as 2700°C, the maximum operating temperature is as high as 2200°C, and it can maintain the complete fiber shape even at 2500°C.
Low thermal conductivity at room temperature, 06Wm.k
High purity, low density,
The best corrosion resistance. ZrO2's acid and alkali corrosion resistance is significantly better than SiO2 and Al2O3.
It is not easy to volatilize and pollution-free at high temperatures. ZrO2 has the lowest high-temperature vapor pressure among all metal oxides, and is chemically inert, not easy to volatilize and pollution-free at high temperatures.
Application:
1. As ultra-high temperature thermal insulation and protection materials and ceramic-based composite reinforcement materials, it is used in key technical fields such as aerospace, national defense, and atomic energy.
2. It is used to make ultra-high temperature industrial kilns, ultra-high temperature experimental electric furnaces and other ultra-high temperature heating devices above 1500°C and up to 2200°C, and is used in many industrial and scientific research fields such as ceramic sintering, metal smelting, high temperature decomposition, semiconductor manufacturing, quartz melting, crystal growth, and experimental research.
3. As high-temperature filter material and high-temperature reaction catalyst carrier, etc., it is used for filtering and removing impurities from liquids or gases at high temperatures, as well as synthesis or cracking catalysis of high-temperature chemical reactions.
Technical indicators:
Appearance: short and broken fibers, white
Chemical composition: ZrO2+Y2O3≥99.7%
Y2O3: 15.37±1.59%
Si.Fe.Na and other impurities ≤ 0.3%
Crystal phase: cubic phase
Single fiber diameter (um): 60.±2.0
Fiber melting point: 2700℃
Recommended operating temperature: 2200℃
