Atomfair High-Purity Silicon Nitride (Si3N4) Ceramic Powder for Substrate Materials, Alpha Phase ≥90%, D50 <0.9 μm, 4N (99.99% purity)
Product Description
Atomfair High-Purity Silicon Nitride (Si3N4) Ceramic Powder for Substrate Materials is supplied as light beige powder with Alpha phase ≥90% and the stated particle-size specification. It is intended for silicon nitride ceramic substrates and high-power module packaging 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
- Low Fe, Al, and Ca impurity limits for ceramic substrate material evaluation.
- Alpha-phase silicon nitride powder with D50 below 0.9 μm.
- Defined nitrogen, free silicon, carbon, and oxygen specifications.
APPLICATION SCOPE: silicon nitride ceramic substrates and high-power module packaging 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 ≥90% in Atomfair Si₃N₄ powder for ceramic substrate applications?
The alpha phase ≥90% is critical because alpha-phase Si₃N₄ is the preferred precursor for liquid-phase sintering to achieve dense, high-strength ceramic substrates with controlled grain morphology. The product's specification ensures a high fraction of the reactive alpha phase, which directly influences the final substrate's thermal conductivity and mechanical reliability for high-power module packaging.
How do the impurity limits (Fe, Al, Ca ≤200 ppm each) affect the performance of this powder in high-power module packaging?
Low Fe, Al, and Ca impurities (each ≤200 ppm) are essential to minimize dielectric loss and prevent degradation of thermal and electrical properties in sintered substrates. These limits ensure the powder meets the purity requirements for evaluating silicon nitride ceramic substrates in high-power module packaging, where even trace contaminants can compromise insulation resistance and thermal conductivity.
What handling and storage considerations are required for Atomfair Si₃N₄ powder with D50 <0.9 μm?
The submicron particle size (D50 <0.9 μm) increases surface area and potential for airborne dust, requiring handling in a fume hood or with appropriate PPE to avoid inhalation. The powder should be stored in a sealed, dry container to prevent moisture absorption, as the specified oxygen content ≤1.4% indicates sensitivity to oxidation, which could alter sintering behavior.
Atomfair's Si3N4 powder (alpha phase ≥90%, D50 <0.9 μm, 4N) is evaluated as a well-characterized raw material for silicon nitride ceramic substrate and high-power module packaging research; its metallic impurity limits and major-element specifications are defined, while the ≤1.4% oxygen bound and fine alpha-phase content are the key composition parameters to control during processing.
Positive
- Low metallic impurity limits: Fe, Al, and Ca are each specified at ≤200 ppm, providing a controlled impurity baseline for evaluating Si3N4 ceramic substrate materials and high-power module packaging applications.
- Defined alpha phase and fine particle size: Alpha phase ≥90% with D50 <0.9 μm supplies a consistently fine, phase-controlled starting powder suitable for Si3N4 substrate fabrication research.
Trade-offs
- Oxygen content requires process consideration: Oxygen is specified at ≤1.4%, a non-negligible oxide fraction in a 4N-grade nitride powder that must be accounted for when evaluating sintering behavior and final substrate composition.
- Research-oriented qualification pathway: The stated scope is ceramic substrate and high-power module packaging research, and custom specifications, quantities, and packaging are confirmed only through technical review and quotation 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).
