Atomfair Beta Silicon Carbide Powder (3C-SiC), >99% Purity, D50 75.3 μm – Thermal Conductivity and Microwave Absorption
Product Description
Atomfair beta Silicon Carbide Powder (3C-SiC) is supplied with >99% purity, D50 75.3 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 >99% purity grade with D50 75.3 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 of surface impurities. Particle size distribution and tap density must be verified before use in thermal or dielectric formulations.
- Moisture Sensitivity: Store in a sealed container under dry inert gas to avoid agglomeration from ambient humidity.
- Oxidation Risk: Elevated processing temperatures above 800°C in air may oxidize particle surfaces, altering dielectric properties.
- Dispersion Compatibility: Evaluate dispersant selection and mixing energy to prevent sedimentation in polymer or ceramic matrix formulations.
This procedure outlines the steps to condition and incorporate beta SiC powder into a polymer or ceramic matrix for thermal or dielectric testing. Proper dispersion and degassing are critical to achieving uniform filler distribution and avoiding voids.
Required Equipment: Vacuum oven, Planetary ball mill or high-shear mixer, Analytical balance
- Dry the powder
Dry the powder in a vacuum oven at 120°C for 2 hours to remove adsorbed moisture. - Weigh the required mass
Weigh the required mass of dried powder using an analytical balance to achieve the target filler loading. - Disperse in matrix
Disperse the powder into the matrix phase using a high-shear mixer or planetary ball mill at moderate speed to avoid particle fracture. - Degas the mixture
Degas the mixture under vacuum for 15 minutes to remove entrapped air bubbles. - Cast or cure the composite
Cast or cure the composite according to the matrix manufacturer's recommended schedule.
What thermal performance can be expected from Atomfair beta SiC powder (3C-SiC) with D50 75.3 μm when used as a thermally conductive filler?
The product description does not state a specific thermal conductivity value. It specifies a >99% purity, complete-crystal, low-defect cubic beta-SiC powder format with high density and low oil absorption, which is positioned for thermal-conductive filler research. Actual composite conductivity must be determined by formulation testing because no quantitative conductivity figure is supplied.
Can this 3C-SiC powder be evaluated in both microwave-absorbing and dielectric insulation research?
Yes. The stated application scope explicitly includes microwave-absorbing materials and dielectric or insulation materials research. The supplied grade is a cubic beta-SiC powder with >99% purity and a median particle size of D50 75.3 μm; custom particle-size and purity variants may be evaluated on request. Final compatibility should be confirmed through batch-specific documentation and application testing.
What batch documentation is available for institutional compliance review of this SiC powder?
A COA and SDS can be provided upon request for batch-specific confirmation, and additional documentation requirements may be discussed before order confirmation. This supports institutional review before laboratory use, although the source does not provide shelf-life or storage condition recommendations.
Atomfair 3C-SiC powder provides a phase-defined, >99% pure beta-SiC feedstock with a 75.3 μm median particle size for thermal-conductive filler, microwave-absorbing, and dielectric research; however, the published D90/D97 values require COA confirmation, and alternate particle-size grades are only available through custom technical review.
Positive
- Defined cubic beta-SiC phase with >99% purity: The 3C-SiC crystal structure and >99% purity, with Fe2O3<0.08%, SiO2<0.1%, free Si<0.1%, and free C<0.05%, provide a characterized starting material for thermal-conductivity and microwave-absorption studies.
- Dense powder with low oil absorption: A tap density of 1.92 g/cm³ and low oil-absorption behavior support higher filler loading in composite matrixes, which is relevant when targeting thermally conductive or microwave-absorbing performance.
Trade-offs
- Published particle-size values need verification: The listed D90 of 12 μm and D97 of ≤14 μm are internally inconsistent with the D50 of 75.3 μm, so a batch-specific COA should be requested to establish the true particle-size distribution before formulation.
- Standard grade fixed at D50 75.3 μm: The listed grade is supplied at the 75.3 μm median particle size; other particle-size or purity grades must be custom-evaluated and are subject to technical review and quotation.
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).
