Alumina Powder
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Alumina Powder is a high-purity ceramic material (Al₂O₃) offering excellent hardness, good thermal conductivity, electrical insulation, and chemical stability at high temperatures. Available in angular, near-spherical, and spherical shapes, it suits applications such as thermal spray coatings, electronic fillers, refractories, polishing abrasives, and additive manufacturing.NexusX Advanced Materials, as a premier manufacturer and supplier of high-quality. Alumina (Al2O3) products, focuses on producing high-precision aluminum nitride silicon structural compenents through advanced technologies for diverse application fields.
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Alumina Powder Data Sheet
Purity: | 99.9%-99.99% |
Morphology: | Near-spherical, Spherical, or Irregular |
Appearance: | White Powder |
Particle Size: | Sub-micron to 500 micron, or Nano-scale |
Alumina Powder Descriptions
Alumina Powder (Al₂O₃) is a high-performance engineered ceramic known for its exceptional hardness, thermal conductivity, and electrical insulation. It is available in various morphologies—including angular, near-spherical, and fully spherical—to meet specific requirements for flowability and packing density. The material is widely utilized across industrial sectors for thermal spray coatings, ceramic fillers, catalyst supports, polishing abrasives, and refractory linings, offering reliable chemical stability even under extreme temperatures.
Alumina Powder Advantages
- High Hardness & Wear Resistance – Provides excellent protection against abrasion, erosion, and surface degradation in coatings and components.
- Good Thermal Conductivity – Enables efficient heat dissipation in electronic packaging, thermal interface materials, and heat sink fillers.
- Excellent Electrical Insulation – Offers high dielectric strength, making it ideal for electrically insulating applications in electronics and power modules.
- High-Temperature Chemical Stability – Maintains chemical inertness and oxidation resistance at temperatures typically exceeding 1600°C, suitable for refractories and high-temperature processes.
- Versatile Particle Morphologies – Available in angular, near-spherical, and fully spherical shapes to optimize flowability, packing density, and dispersion for specific applications.
- Cost-Effective – Compared to many advanced ceramic powders (e.g., silicon carbide, boron nitride), alumina powder offers a favorable balance of performance and price.
- Strong Compressive Strength – Provides structural integrity in ceramic composites, castables, and pressed components.
- Good Corrosion Resistance – Resistant to most acids, alkalis, and harsh chemicals, ensuring long-term durability in aggressive environments.
Alumina Powder Applications
- Thermal Spray Coatings – Used in plasma, HVOF, and flame spraying to produce wear-resistant, corrosion-resistant, and thermal barrier coatings on metal and ceramic surfaces.
- Electronic Packaging Fillers – Mixed with epoxy or silicone resins as thermally conductive but electrically insulating fillers for heat dissipation in power modules, LEDs, and IC substrates.
- Refractory Materials – Added to castables, bricks, ramming mixes, and gunning materials for kilns, furnaces, incinerators, and ladles requiring high thermal shock resistance.
- Polishing and Lapping Abrasives – Provides uniform material removal for fine polishing of metals, glass, semiconductor wafers, optical lenses, and gemstones.
- Additive Manufacturing (3D Printing) – Serves as a feedstock for powder bed fusion, binder jetting, and ceramic SLA processes to produce complex ceramic components.
- Catalyst Supports – Used as a high-surface-area carrier for catalysts in petrochemical refining, automotive exhaust treatment, and chemical synthesis.
- Ceramic Injection Molding – Combined with binders to mold precision parts such as insulators, nozzles, pump seals, and wear-resistant components.
- Battery Separator Coatings – Applied as a thin ceramic coating on lithium-ion battery separators to enhance thermal stability, mechanical strength, and electrolyte wettability.
Alumina Powder Packaging
Alumina Powder is typically packaged in sealed, moisture-proof plastic bags, then placed in sturdy drum containers or fiber cartons to prevent contamination and ensure safe transport.
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- SAFETY DATA SHEET (SDS) -Alumina Powder
FAQ
What is Alumina Powder?
Alumina Powder is a high-purity ceramic material composed of aluminum oxide (Al₂O₃) particles, known for its high hardness, good thermal conductivity, electrical insulation, and chemical stability at high temperatures.
What are the main uses of Alumina Powder?
Alumina Powder is widely used in thermal spray coatings, electronic packaging fillers, refractories, polishing abrasives, catalyst supports, 3D printing, and battery separator coatings.
What are the advantages of Alumina Powder?
Alumina Powder offers high wear resistance, good thermal conductivity, excellent electrical insulation, high-temperature stability, corrosion resistance, and availability in multiple particle shapes (angular, near-spherical, spherical).
Can Alumina Powder be used in 3D printing?
Yes, Alumina Powder is commonly used as a feedstock in powder bed fusion and binder jetting 3D printing processes to produce complex ceramic parts with good density and surface finish.
How should Alumina Powder be stored?
Alumina Powder should be stored in a sealed container in a cool, dry environment to prevent moisture absorption and contamination, which can affect flowability and dispersion performance.
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