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Spherical Alumina Filler for Precision Ceramics

This product is a high-purity electronic-grade spherical alumina filler, specially optimized for precision ceramic applications. It features high sphericity, narrow particle size distribution, excellent thermal stability, and chemical inertness. Produced via advanced flame fusion technology, it ensures smooth particle surfaces and superior flowability, significantly enhancing the sintering density, mechanical strength, and thermal conductivity of ceramic materials. Ideal for high-end electronic ceramics, structural ceramics, and functional ceramics.

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Product Description

 Product Description 
 
This product is a high-purity electronic-grade spherical alumina filler, specially optimized for precision ceramic applications. It features high sphericity, narrow particle size distribution, excellent thermal stability, and chemical inertness. Produced via advanced flame fusion technology, it ensures smooth particle surfaces and superior flowability, significantly enhancing the sintering density, mechanical strength, and thermal conductivity of ceramic materials. Ideal for high-end electronic ceramics, structural ceramics, and functional ceramics. 

 Applications 

 Electronic Ceramics: MLCC (Multilayer Ceramic Capacitors), ceramic substrates, insulators
 Structural Ceramics: High-strength wear-resistant components, cutting tools
 Functional Ceramics: Thermal conductive ceramics, bioceramics, transparent ceramics
 Other Fields: 3D printing ceramic powders, precision coating materials

Key Advantages

High Purity & Density: ≥99.5% purity with low Na/K content, preventing sintering defects.
Optimized Sphericity: Perfect spherical shape reduces interparticle friction, improving slurry flowability and packing density.
Enhanced Performance: Boosts mechanical strength, thermal conductivity, and dielectric properties of ceramics.
Process Compatibility: Suitable for dry pressing, injection molding, tape casting, and other forming processes.

Packaging & Storage

Packaging: 25kg/bag (customizable)
Storage: Store in a cool, dry place to avoid moisture absorption.

Why Choose Us?

 Customization: Tailored particle size and surface treatments (e.g., silane coupling agent modification).
 Strict QC: ISO 9001-certified manufacturing with batch inspection reports provided.

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