FLJ Enterprise FLJ
Alumina Fiber
Alumina-silica fiber is a continuous fiber. Its most significant feature is being completely Boron-Free, ensuring no boron vapor generation at high temperatures, making it ideal for semiconductor processes requiring extreme atmospheric purity.
Composed of thousands of filaments with a diameter of only 7 microns, it possesses extremely high tensile strength and modulus. Besides industrial insulation, it is an ideal reinforcement material for Metal Matrix Composites (FRM) and Ceramic Matrix Composites (CMC).
- Boron-Free: Prevents chemical contamination at high temperatures.
- Continuous Filament: High strength, flexible, and easy to process into various textiles.
- High Heat Resistance: Service temperature up to 1,250°C.
- Electrical Insulation: Excellent electrical insulation and low dielectric constant.
Typical Properties
| Item | 70/30 |
|---|---|
| Chemical Composition (Al₂O₃ / SiO₂) | 72% / 28% |
| Filament Diameter | 7 μm |
| Density | 2.9 g/cm³ |
| Tensile Strength | 1,967 MPa (200 Kgf/mm²) |
| Tensile Modulus | 167 GPa (17,000 Kgf/mm²) |
| Service Temperature | 1,250°C |
| Softening Point | 1,800°C |
Product Forms
Available in various textile forms:
- Yarn: Basic continuous fiber for weaving or winding.
- Fabric: For heat shields and high-temperature gaskets.
- Tape: For pipe and cable wrapping.
- Sleeve: For thermocouple and wire insulation protection.
- Chopped Fiber: For composite material reinforcement.