Atomfair Beta Silicon Carbide Powder (3C-SiC), >99% Purity, D50 66 μm – Thermal Conductivity and Microwave Absorption
Product Description
Atomfair beta Silicon Carbide Powder (3C-SiC) is supplied with >99% purity, D50 66 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 66 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 66 μm in beta-SiC powder affect its performance as a thermal-conductive filler versus microwave absorption?
The 66 μm median particle size (D50) provides a balance between packing density and surface area for thermal-conductive filler applications, where larger particles generally reduce interfacial thermal resistance. For microwave absorption, the 66 μm size influences dielectric loss mechanisms, but the source does not specify frequency-dependent performance. The powder's cubic beta-SiC (3C-SiC) crystal structure and low-defect, high-density format support tunable dielectric behavior, as noted in the product description.
What are the key impurity constraints when integrating this beta-SiC powder into dielectric or insulation materials?
The powder has a defined impurity profile: Fe₂O₃ < 0.08%, SiO₂ < 0.1%, free silicon (F.Si) < 0.1%, and free carbon (F.C) < 0.05%. These low impurity levels are critical for maintaining consistent dielectric properties and avoiding unintended conductivity or breakdown pathways in insulation materials. The >99% purity grade ensures minimal contamination for research-grade evaluations.
What handling or storage considerations are required for this beta-SiC powder given its tap density and particle size distribution?
With a tap density of 1.85 g/cm³ and a broad particle size distribution (D10 40.5 μm, D90 104 μm, D97 ≤122 μm), the powder may exhibit settling during transport and requires careful handling to avoid dust generation. The source does not specify moisture sensitivity or reactivity, but standard precautions for fine ceramic powders—such as using PPE and storing in sealed containers—are recommended. A Safety Data Sheet (SDS) is available upon request for batch-specific guidance.
Atomfair Beta Silicon Carbide Powder (3C-SiC) with >99% purity and D50 66 μm offers a defined cubic beta-SiC crystal structure suitable for thermal-conductive filler, microwave-absorbing, and dielectric insulation research, though its coarse median particle size and low-defect density impose trade-offs in dispersion and processing for fine-scale applications.
Positive
- High-purity cubic beta-SiC phase: The >99% purity and complete-crystal, low-defect cubic beta-SiC (3C-SiC) structure provide consistent dielectric and thermal properties for functional filler evaluation in thermal-conductive and microwave-absorbing materials.
- Tunable dielectric performance: Low oil-absorption behavior combined with tunable dielectric performance enables controlled formulation of insulation or microwave-absorbing composites without excessive binder uptake.
Trade-offs
- Coarse particle size limits dispersion: With D50 of 66 μm and D90 of 104 μm, the powder is relatively coarse, which may require extended milling or specialized mixing protocols to achieve uniform dispersion in thin-film or fine-scale composite applications.
- Impurity profile requires verification: Trace impurities including Fe₂O₃ (<0.08%) and SiO₂ (<0.1%) may influence dielectric loss or thermal stability in high-precision applications, necessitating batch-specific COA review before deployment.
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).
