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Ultrafine Spherical Alumina Powder (D50 2-50μ m) - Electronic Grade

This product is a high-purity electronic-grade ultrafine spherical alumina powder, manufactured using advanced plasma melting technology. It features perfect sphericity, ultra-fine particle size (controllable D50 2-50μm), as well as excellent flowability, dispersibility, and thermal conductivity. Suitable for high-end electronic packaging, thermal interface materials (TIM), 5G communication substrates, LED encapsulation, and other fields, it significantly enhances the thermal management performance and reliability of materials.

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Product Description

Product Description:

This product is a high-purity electronic-grade ultrafine spherical alumina powder, manufactured using advanced plasma melting technology. It features perfect sphericity, ultra-fine particle size (controllable D50 2-50μm), as well as excellent flowability, dispersibility, and thermal conductivity. Suitable for high-end electronic packaging, thermal interface materials (TIM), 5G communication substrates, LED encapsulation, and other fields, it significantly enhances the thermal management performance and reliability of materials.

Applications

Electronic Packaging: Used in IC packaging and LED phosphor coatings to improve heat dissipation
Thermal Interface Materials (TIM): Fills thermal greases/gels to enhance thermal conductivity (5-15 W/m·K)
5G High-Frequency Substrates: Reduces dielectric loss and improves signal transmission stability
Precision Ceramics: Acts as a sintering aid to increase densification
Lithium Battery Separator Coatings: Enhances thermal stability and prevents thermal runaway

Product Advantages

Ultra-Fine Particle Size + High Sphericity: Excellent flowability, high packing density, and reduced stress concentration
Ultra-High Purity (4N Grade): Low sodium/silicon content, ideal for high-reliability electronic components
Superior Thermal Conductivity: Thermal conductivity up to 30 W/m·K (theoretical value)
Customizable Particle Size: Adjustable within 2-50μm to meet diverse application needs
Surface Modification Available: Silane coupling agent treatment improves compatibility with resins/polymers

Packaging & Storage

Packaging: 25kg/bag or customized upon request
Storage: Store in a sealed, cool, and dry environment to avoid moisture absorption

Why Choose Our Product?

Strict Quality Control: Each batch comes with test reports
Stable Supply: Monthly production capacity of 200 tons supports bulk orders
Technical Support: Free application optimization consulting

Contact Us: Request free samples or customized solutions!
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Project	Related indicators	Explain
Purity	A1.03	More than 99%
Impurities	Na,0	Can be as low as below 300ppm
Appearance	0-A1z03 content	Up to 90% or more
Particle Size Distribution	D50	Optional within 2um-50um
	Di₀0	Can be as low as 10um or less
	Particle size distribution	Adjustments can be made based on the typical distribution according to the requirements of the palace household, including multi-modal distribution and narrow distribution

Project	Unit	Typical values
Appearance	/	White pink wood
Particle Shaped Ni	/	Spherical
Density	kg/m³	3.7×103
Mohs Hardness	/	6-9
Dielectric Constant	Er	9
Dielectric Loss	lgδ	0.0003
Linear expansion coefficient	1/K	0.7x10-6
Thermal conductivity	W/Kam	30