Product Description »
Brief Introduction to Zirconia Fibers
Zirconia fibers are yttria stabilized polycrystalline fibers and the only refractory fiber material which satisfies long-term usage under super-high temperature oxidizing atmosphere environments over 1600centigrade. The high melting point 2700centigrade of zirconia itself, non-oxidable and fine high temperature-resistant properties, imparting zirconia fibers' higher service temperature and better thermal insulating performance than market-existing refractory oxide fibers, such as alumina fibers and mullite fibers. The excellent high temperature stability, corrosion resistance, thermal shock resistance and non-pollution properties make zirconia fibers the best candidate for high demand refractory fiber materials.
Performance
1. The super-high service temperature: Maximum work temperature of zirconia fibers is up to 2200centigrade, even as high as 2500centigrades, zirconia fibers can remain normal shape.
2. The best thermal insulating property: The coefficient of thermal conductivity of zirconia is the lowest among all metal oxides.
3. The best corrosion resistance performance: The resistant ability against acid corrosion and alkaline corrosion of zirconia is remarkably superior to alumina and silica.
4. The lowest volatilization and non-pollution properties at high temperatures: The high-temperature saturated vapor tension of zirconia is the smallest among all metal. Oxides, which makes zirconia fibers uneasily volatilize and have non-pollution at high temperatures.
Performance Index
1. Chemical compositions: WT% of tetragonal ZrO2e99 %.
2. Fibers microstructure: Polycrystalline structure.
3. Shape appearance: Translucent, look like white silks.
4. Fibers length: Several tens centimeters, even be continuous.
5. Average diameter: 3-8 microns.
6. Mechanical strength: Strong and flexible, can be bent and flexed easily.
7. Long term service temperatures: 1600-2200centigrade
8. Coefficient of thermal conductivity: 0.1-0.15W/m.K
9. Bulk density: 90-150Kg/m3
10. Shot content: 0, not any shot in fibers.
Application Prospect
1. Zirconia fibers can be used as super-high temperature insulation materials, fence materials, ablation materials and satellite battery separation materials, finding their applications in spaceflight, military and nuclear power fields.
2. Zirconia fibers can be used as super-high temperature refractory materials for 1600-2200centigrade electric furnaces, gas burning or oil burning furnaces and other high-temperature apparatus, finding their applications in ceramic sintering, single crystal growth, metal smelting, petroleum cracking, materials heat treatment and scientific research fields. Not only have excellent thermal insulating properties, but also meet the requirement for rapid temperature increase and rapid temperature decrease.
3. Zirconia fibers can be used as reinforcement materials for metal-matrix and ceramic-matrix composite materials, finding their applications in aviation and spaceflight fields. Especially when used for ablative and insulating functional composite materials, they will exert their unique advantages.
4. Furthermore, zirconia fibers also can be used as high-temperature filtration materials and high-temperature reaction catalyst carriers, and so on.
