Atomfair Beta Silicon Carbide Powder (3C-SiC), >98% Purity, D50 1.02 μm – Thermal Conductivity and Microwave Absorption
Product Description
Atomfair beta Silicon Carbide Powder (3C-SiC) is supplied with >98% purity, D50 1.02 μm particle size, and a cubic beta-SiC (3C-SiC) crystal structure. It is intended for thermal-conductive fillers, microwave-absorbing materials, and dielectric or insulation materials research.
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Technical Specifications
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Customization & Ordering
Custom particle-size and purity requirements may be evaluated for selected
grades upon request. Alternative package sizes may also be available.
Minimum order quantities, pricing, and lead times vary by specification and
will be confirmed during technical review and quotation.
Key Features and Advantages
- Defined >98% purity grade with D50 1.02 μm particle size.
- Complete-crystal, low-defect cubic beta-SiC powder format with high density.
- Low oil-absorption behavior with tunable dielectric performance for functional filler evaluation.
APPLICATION SCOPE: thermal-conductive fillers, microwave-absorbing materials, and dielectric or insulation materials research
DOCUMENTATION: COA and SDS can be provided upon request for batch-specific confirmation. Additional documentation requirements may be discussed before order confirmation.
LABORATORY PROCUREMENT SUPPORT
For grade selection, particle-size confirmation, documentation support or custom specification review, contact our technical sales team.
This powder requires controlled atmosphere storage to prevent moisture adsorption and oxidation, which can alter surface chemistry and dielectric properties. Particle agglomeration may occur under ambient humidity, affecting dispersion uniformity in composite formulations.
- Moisture Sensitivity: Store in a sealed container under dry inert gas to maintain specified particle size distribution and prevent surface oxidation.
- Agglomeration Risk: Avoid prolonged exposure to humid environments to prevent irreversible particle agglomeration that reduces effective surface area.
- Contamination Control: Use dedicated spatulas and containers to prevent cross-contamination from metallic or carbonaceous impurities.
This procedure describes the safe handling and dispersion of beta silicon carbide powder for use in thermal-conductive or microwave-absorbing composite materials. Proper pre-drying and de-agglomeration steps are critical to achieve uniform filler distribution and target dielectric performance.
Required Equipment: Analytical balance, Vacuum oven, Planetary ball mill or high-shear mixer
- Pre-dry the powder
Dry the powder in a vacuum oven at 80°C for 2 hours to remove adsorbed moisture before weighing. - Weigh the required mass
Weigh the desired amount of dried powder using an analytical balance inside a glovebox or fume hood. - De-agglomerate the powder
Mill the powder in a planetary ball mill with zirconia beads at 200 rpm for 10 minutes to break up soft agglomerates. - Disperse into matrix
Add the de-agglomerated powder to the polymer or ceramic matrix under high-shear mixing until a visually uniform suspension is achieved. - Degas the mixture
Degas the composite mixture under vacuum for 15 minutes to remove entrapped air bubbles before curing or casting.
With a D50 of 1.02 μm and cubic beta-phase structure, how does this SiC powder behave in thermal-conductive filler and microwave-absorption evaluations?
Atomfair's 3C-SiC powder is a complete-crystal, low-defect cubic beta-SiC grade with D50 1.02 μm, D10 0.43 μm, D90 2.43 μm, and D97 ≤2.85 μm. The defined particle-size distribution, high-density powder format, and low oil-absorption behavior are specified to support consistent loading in composite formulations, while tunable dielectric performance is intended for thermal-conductive filler and microwave-absorbing material research.
Can this 3C-SiC powder be used in dielectric or insulation research given its impurity profile?
Yes, this grade is explicitly intended for dielectric and insulation materials research in addition to thermal-conductive fillers and microwave-absorbing materials. It is supplied at >98% purity with a defined impurity profile of Fe2O3<0.2%, SiO2<0.5%, F.Si<0.2%, and F.C<0.1%, and batch-specific confirmation can be requested via the COA.
What packaging and batch-documentation options are available for this beta SiC powder when ordering for laboratory use?
This product is offered in 500 g, 1 kg, and 5 kg packages. A COA and SDS can be provided upon request for batch-specific confirmation, and custom particle-size, purity, and package-size requirements may be evaluated during technical review and quotation.
Atomfair beta-SiC powder (3C-SiC, >98% purity, D50 1.02 μm) offers a defined particle size and low-defect cubic structure suitable for thermal-conductive fillers and microwave-absorbing materials, with trade-offs in tap density and purity for advanced applications.
Positive
- Defined particle size and purity grade: With D50 of 1.02 μm and >98% purity (Fe2O3<0.2%, SiO2<0.5%, F.Si<0.2%, F.C<0.1%), this beta-SiC powder provides consistent filler properties for thermal management and microwave absorption applications.
- Low-defect cubic beta-SiC structure: The complete-crystal, low-defect 3C-SiC powder with high density enables low oil absorption and tunable dielectric performance, beneficial for functional filler evaluation in composite systems.
Trade-offs
- Moderate tap density (0.81 g/cm³): The tap density of 0.81 g/cm³ may require careful formulation and processing to achieve optimal packing density in thermal interface materials or dielectric composites.
- Purity constraints for high-purity applications: The >98% purity and presence of SiO2 up to 0.5% and Fe2O3 up to 0.2% may limit direct use in applications requiring sub-ppm impurity levels, such as advanced semiconductor or high-reliability electronics.
Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.
To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.
Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD excl. heavy equipment). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).
