Brown Aluminum Oxide (Brown Fused Alumina) Micropowder Applications
Brown aluminum oxide (Al₂O₃) micropowder, also known as brown fused alumina (BFA), is a high-hardness (Mohs 9.0), durable abrasive material with excellent grinding and polishing performance. Due to its toughness, thermal stability, and cost-effectiveness, it is widely used in multiple industries.
1. Precision Grinding & Polishing
Metal Processing:
Deburring and finishing of steel, cast iron, and alloy parts.
Surface preparation for welding or coating.
Glass & Ceramics:
Edge grinding and polishing of optical lenses, display glass, and ceramic components.
Semiconductor & Electronics:
Wafer backgrinding, silicon substrate polishing.
2. Abrasive Tools & Coatings
Bonded Abrasives:
Used in grinding wheels, cutting discs, and honing stones for metalworking.
Coated Abrasives:
Sandpaper, abrasive belts, and discs for wood, metal, and composite materials.
Anti-Slip & Wear-Resistant Coatings:
Added to industrial floor coatings, marine paints, and pipeline linings.
3. Blasting & Surface Treatment
Sandblasting/Shot Blasting:
Rust removal, surface cleaning, and texture modification for steel structures, auto parts, and molds.
Common mesh sizes: #80-#220 (coarse to medium).
Vibratory Finishing:
Mass finishing of small parts (fasteners, gears) for uniform deburring.
4. Refractory & High-Temperature Applications
Refractory Materials:
Additive in furnace linings, castables, and fireproof bricks (resists temperatures up to 1850°C).
Ceramic Reinforcements:
Improves strength and thermal shock resistance in composites.
5. Other Specialized Uses
3D Printing:
Reinforcement filler for metal/ceramic powders to enhance part durability.
Lapping & Superfinishing:
Ultra-fine micropowders (W1-W40) for high-precision surfaces in bearings and seals.
Key Advantages of Brown Aluminum Oxide Micropowder
High Toughness: Longer lifespan than white alumina in heavy-duty grinding.
Cost-Effective: More economical than diamond or silicon carbide for many applications.
Customizable Sizes: Available from coarse (F16-F220) to fine micropowders (W1-W63).