Aluminum Oxide (Al₂O₃) Nanopowder / Nanoparticles – Alpha Phase, High Purity 99.9%, Size: 300 nm

Description

Aluminum Oxide (Al₂O₃) Nanopowder / Nanoparticles – Alpha Phase, High Purity 99.9%, Size: 300 nm

• Chemical Formula: Al₂O₃

• Phase Composition: 100% alpha (no gamma) – Hydrophilic

• Purity: ≥99.9%

• Average Particle Size (APS): 300 nm (TEM: 80 wt% = 300 nm, 10 wt% <300 nm, 10 wt% >300 nm, with 2 wt% reaching 500 nm)

• Specific Surface Area (SSA): 5 m²/g

• Color: White

• Crystallographic Structure: Rhombohedral

• Melting Point: 2045 °C

• Boiling Point: 2980 °C

• Density: 3.97 g/cm³

Elemental Analysis (wt%):

• Al₂O₃: ≥99.9

• B₂O₃: ≤0.002

• CaO: ≤0.01

• Fe₂O₃: ≤0.01

• MgO: ≤0.02

• Na₂O: ≤0.03

• SiO₂: ≤0.02

Description:
Alpha-phase Aluminum Oxide (Al₂O₃) nanoparticles are ultra-fine powders with exceptional phase stability, hardness, and dimensional stability. Their α-phase structure significantly improves ceramic density, surface finish, thermal fatigue resistance, fracture toughness, creep resistance, and wear resistance.

Due to its far-infrared emission capabilities, α-Al₂O₃ is widely used in fiber fabrics, high-pressure sodium lamps, and thermal insulation applications. Its high electrical resistivity and excellent insulation properties make it ideal for integrated circuit substrates, YAG laser crystals, and precision optical components.

Applications:

• Transparent ceramics: High-pressure sodium lamps, EP-ROM windows.

• Advanced ceramics: High-strength alumina ceramics, cutting tools, high-purity crucibles, furnace tubes, C substrates, packaging materials.

• Gemstones & single crystals: Ruby, sapphire, yttrium aluminum garnet.

• Surface finishing: Polishing materials for glass, metals, semiconductors, plastics, and tapes.

• Composite reinforcement: Improves wear resistance in paints, rubbers, plastics, and advanced waterproof materials.

• Electronics & optics: Vapor deposition, fluorescent materials, special glass, composite resins.

• Catalysis: Catalyst and catalyst carrier.

• Aerospace: Components such as aircraft wing leading edges.

Recommended Dosage:
Generally 1–5%, with final optimization determined through application-specific testing.