Atomfair Beta Silicon Carbide Powder (3C-SiC), >98% Purity, D50 1.54 μm – Thermal Conductivity and Microwave Absorption
Product Description
Atomfair beta Silicon Carbide Powder (3C-SiC) is supplied with >98% purity, D50 1.54 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 1.54 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.
How does the D50 particle size of 1.54 μm and tap density of 0.85 g/cm³ affect the thermal conductivity and packing efficiency of this beta-SiC powder in epoxy-based thermal interface materials?
The D50 of 1.54 μm provides a fine particle size that enables uniform dispersion and high packing density in epoxy matrices, while the tap density of 0.85 g/cm³ indicates moderate packing efficiency. The low oil absorption behavior further supports high filler loading without excessive viscosity. Specific thermal conductivity values are not provided in the product data; empirical testing in the target resin system is recommended to quantify performance.
What are the critical impurity limits in this beta-SiC powder and how do they affect its suitability for microwave-absorbing material research?
The product specifies impurity limits of Fe₂O₃<0.2%, SiO₂<0.3%, F.Si<0.2%, and F.C<0.05%. These levels are typical for functional filler applications; however, iron oxide and free silicon can introduce additional dielectric loss mechanisms, which may be advantageous or detrimental depending on the desired microwave absorption profile. The source does not provide specific microwave absorption data, so application-specific validation is required.
What is the crystal structure of this beta-SiC powder and how does it influence thermal conductivity compared to other SiC polytypes?
The product is cubic beta-SiC (3C-SiC) with a low-defect, complete-crystal structure and high density. The cubic phase is known for high isotropic thermal conductivity, which can be beneficial for thermal management applications. The source does not provide direct comparative data with other polytypes, but the stated low-defect and high-density characteristics are indicators of potential thermal performance.
Atomfair Beta Silicon Carbide Powder (3C-SiC) with >98% purity, D50 1.54 μm, and low-defect cubic structure offers defined performance for thermal-conductive fillers, microwave-absorbing materials, and dielectric research. Operational considerations include impurity profile and tap density.
Positive
- High purity and defined particle size: With >98% purity and a D50 of 1.54 μm, this powder provides consistent properties for filler and dielectric applications.
- Low-defect cubic beta-SiC structure: The complete-crystal, low-defect structure enables high density and tunable dielectric performance, suitable for microwave absorption and thermal management.
Trade-offs
- Presence of iron and silica impurities: Fe2O3 (<0.2%) and SiO2 (<0.3%) impurities may limit suitability for ultra-high-purity or certain electronic applications.
- Moderate tap density for packing: Tap density of 0.85 g/cm³ may require processing optimization to achieve high packing density in composite formulations.
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).
