Atomfair High-Purity Alpha Silicon Nitride (Si3N4) Ceramic Powder, Alpha Phase ≥93%, D50 ≤0.75 μm, 4N (99.99% 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. 4N (99.99% 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.
How does the alpha phase content and particle size distribution affect the sintering behavior of this silicon nitride powder?
The product's alpha phase ≥93% ensures a high proportion of the reactive alpha-Si3N4 phase, which is essential for achieving full densification and desired mechanical properties during sintering. The D50 ≤0.75 μm provides a fine particle size that enhances sintering kinetics. Controlled impurities (Fe ≤1500 ppm, Al ≤900 ppm, Ca ≤900 ppm) and low free silicon (<0.3%) minimize liquid phase formation and secondary phase precipitation, which can degrade high-temperature performance.
What are the key impurity limits that influence the suitability of this powder for high-purity ceramic applications?
The product specifies Fe ≤1500 ppm, Al ≤900 ppm, Ca ≤900 ppm, and free silicon <0.3%, which are critical for applications requiring high chemical purity and controlled grain boundary chemistry, such as advanced structural ceramics and electronic substrates. The 4N (99.99%) purity grade and controlled oxygen (≤2.0%) and carbon (≤0.15%) levels further ensure minimal contamination during processing.
What documentation is available for batch-specific quality assurance and safety handling of this silicon nitride powder?
The manufacturer provides a Certificate of Analysis (COA) and Safety Data Sheet (SDS) upon request for batch-specific confirmation of specifications and handling precautions. The fine particle size (D50 ≤0.75 μm) necessitates standard dust control measures, and the SDS details proper storage, exposure limits, and spill procedures.
The evaluated alpha-Si3N4 ceramic powder is specified at alpha phase ≥93%, D50 ≤0.75 µm, and 4N grade, with controlled Fe, Al, Ca, free silicon, carbon, and oxygen levels, providing a defined trace-element baseline for silicon nitride ceramics research.
Positive
- High Alpha Phase Content: Alpha phase is specified at ≥93%, giving researchers a defined crystalline phase ratio for silicon nitride ceramics and materials research.
- Fine D50 Particle Size: The D50 of ≤0.75 µm supports fine ceramic powder processing and permits work with a consistent fine-particle-size feedstock.
Trade-offs
- Metal Impurity Ceilings: Fe ≤1500 ppm, Al ≤900 ppm, and Ca ≤900 ppm are specified; applications with stricter trace-metal requirements must confirm these ceilings are acceptable.
- Oxygen Content Up To 2.0%: The specification allows oxygen up to ≤2.0%, so the powder's oxygen background must be accepted as part of its stated composition.
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).
