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Spherical Alumina Powder for Thermal Interface Materials

This product is high-purity electronic-grade spherical aluminum oxide powder, specifically optimized for thermal interface materials (TIM). It features high thermal conductivity, low thermal resistance, and excellent insulation properties. Prepared by a high-temperature melt-spraying method, the particles exhibit high sphericity (≥95%) and uniform particle size distribution (D50 2-50μm adjustable), significantly enhancing the heat dissipation efficiency of thermal interface materials such as thermal grease, thermal pads, and phase-change materials.

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Product Description

Product Description
This product is high-purity electronic-grade spherical aluminum oxide powder, specifically optimized for thermal interface materials (TIM). It features high thermal conductivity, low thermal resistance, and excellent insulation properties. Prepared by a high-temperature melt-spraying method, the particles exhibit high sphericity (≥95%) and uniform particle size distribution (D50 2-50μm adjustable), significantly enhancing the heat dissipation efficiency of thermal interface materials such as thermal grease, thermal pads, and phase-change materials.
 Application Fields 
Thermal Grease/Gel: Improves thermal conductivity and reduces contact thermal resistance. 
Thermal Pads: Enhances flexibility and heat transfer efficiency. 
Phase-Change Materials: Optimizes high-temperature stability and interface adhesion. 
Electronic Packaging: Used in heat dissipation solutions for CPU, GPU, LED, etc. 
5G/New Energy Equipment: Meets heat dissipation requirements for high-power devices. 

 Product Advantages 
High Thermal Conductivity: Spherical structure minimizes interface thermal resistance and boosts heat transfer efficiency. 
High Purity: ≥99.5% purity prevents impurities from affecting circuit performance. 
Controllable Particle Size: Supports 2-50μm customization to adapt to different viscosity systems. 
Reliable Insulation: High resistivity ensures electronic safety. 
Low Oil Absorption Value: Optimizes filler dispersibility and reduces base material viscosity. 

 Why Choose Us? 
Professional Customization: Provides particle size and surface modification (e.g., silane coupling) services. 
Strict Quality Control: Certified to ISO 9001, RoHS, and REACH standards. 
Rapid Response: Supports sample testing and customized technical solutions. 
Stable Supply: Monthly production capacity of 200 tons to ensure long-term cooperation. 

 Packaging and Transportation 
Standard Packaging: 25kg/bag, customizable options available. 
Transportation: Sea/air freight and express delivery, global shipping supported. 

 Contact Us: Get free samples or technical consultation! 

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