Atomfair High-Purity Alpha Silicon Nitride (Si3N4) Ceramic Powder, Alpha Phase ≥93%, D50 ≤0.75 μm, 3N (99.9% purity)
Product Description
Atomfair High-Purity Alpha Silicon Nitride (Si3N4) Ceramic Powder is supplied as gray powder with Alpha phase ≥93% and the stated particle-size specification. It is intended for ceramic materials and silicon nitride materials research. 3N (99.9% purity) grade.
Technical Specifications |
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Customization & Ordering
Custom specifications, quantities, and packaging may be available upon request. Minimum order quantities, pricing, and lead times will be confirmed during technical review and quotation.
Key Features and Advantages
- Alpha-phase silicon nitride grade with a defined phase proportion.
- D50 particle size of ≤0.75 μm for fine ceramic powder processing.
- Controlled Fe, Al, Ca, free silicon, carbon, and oxygen specifications.
APPLICATION SCOPE: ceramic materials and silicon nitride materials research.
DOCUMENTATION: COA and SDS can be provided upon request for batch-specific confirmation.
TAILORED SOLUTIONS FOR RESEARCH
Contact our engineering team for technical support or official institutional quotations.
What is the significance of the alpha phase content ≥93% in Atomfair Si3N4 powder for ceramic sintering?
The alpha phase content of ≥93% is critical because alpha-Si3N4 is the more reactive, metastable phase that transforms to beta-Si3N4 during liquid-phase sintering, promoting densification and enabling microstructural control. This high alpha fraction, combined with a D50 ≤0.75 μm, provides the fine, reactive starting powder needed for producing dense silicon nitride ceramics with tailored mechanical properties.
How do the impurity limits (Fe ≤1500 ppm, Al ≤900 ppm, Ca ≤900 ppm) affect the high-temperature performance of Si3N4 ceramics?
These controlled impurity levels are essential because Fe, Al, and Ca act as sintering aids or form secondary grain-boundary phases that can degrade high-temperature strength, creep resistance, and oxidation resistance. The specified limits (Fe ≤1500 ppm, Al ≤900 ppm, Ca ≤900 ppm) help ensure that the resulting ceramic maintains its mechanical integrity at elevated temperatures, which is critical for structural applications.
What storage and handling precautions are recommended for Atomfair Si3N4 powder to prevent oxidation or contamination?
Store the powder in a sealed, dry container to minimize moisture pickup and oxidation, as the oxygen content is already specified at ≤2.0%. Use appropriate personal protective equipment and handle in a fume hood or glovebox to avoid inhalation and contamination. The SDS, available upon request, provides detailed safety and handling instructions.
AF-FM-C-SNIT-3F1A-SP00 is a variable-package alpha-Si3N4 powder (Alpha ≥93%, D50 ≤0.75 μm, 3N) with explicit Fe, Al, Ca, free-silicon, carbon, and oxygen ceilings. The sub-micron particle size and defined phase composition make it appropriate for ceramic and Si3N4 materials research, but the maximum impurity and oxygen allowances must be reconciled with the target process before scale-up.
Positive
- Sub-micron D50 particle size: A D50 of ≤0.75 μm provides fine-particle material for ceramic powder processing and silicon nitride research.
- Defined alpha-phase content: Alpha phase ≥93% establishes the intended polymorph proportion, supporting reproducible phase-dependent processing studies.
Trade-offs
- Oxygen content up to 2.0%: The specification permits up to 2.0% oxygen, so this oxygen budget must be considered when evaluating stoichiometry or surface behavior of the powder.
- Residual free silicon up to 0.3%: Free silicon is allowed at <0.3%, and users should confirm actual batch values via the available COA if the application is sensitive to unreacted silicon.
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).
