What is Silicon (Si) Micron Powder?

Silicon (Si) micron powder is a finely milled form of elemental silicon, known for its excellent thermal conductivity, semiconductor properties, and high chemical stability. It is widely used in electronics, energy storage, metallurgy, and advanced materials applications.

Chemical Properties and CAS Number

• Chemical Formula: Si
• CAS Number: 7440-21-3
• Appearance: Gray or black fine powder
• Density: Approximately 2.33 g/cm³
• Melting Point: 1414°C
• Thermal Conductivity: High (~149 W/m·K)
• Electrical Conductivity: Semiconductor properties
• Chemical Stability: Highly stable, resistant to oxidation under standard conditions

Applications of Silicon Micron Powder

1. Electronics and Semiconductors

Widely used in semiconductor manufacturing, integrated circuits, transistors, and microelectronics due to its excellent electrical properties.

2. Energy Storage and Batteries

Applied in lithium-ion batteries, silicon anodes, and energy storage systems to improve battery efficiency and capacity.

3. Metallurgy and Alloying

Used in aluminum-silicon alloys, steel production, and high-strength materials to enhance mechanical properties and heat resistance.

4. Coatings and Ceramics

Incorporated into high-performance coatings, ceramics, and advanced composite materials to improve durability, thermal stability, and wear resistance.

5. Solar Cells and Photovoltaics

Essential in photovoltaic cells, solar panels, and optical devices for energy conversion efficiency and sustainability.

6. 3D Printing and Additive Manufacturing

Used in 3D printing applications for producing high-precision components in aerospace, automotive, and industrial sectors.

Pricing of Silicon Micron Powder

Prices vary depending on purity, particle size, application-specific requirements, and production methods:

• Industrial Grade: Typically ranges from $30 – $100 per kilogram
• High-Purity/Specialized Grade: Prices range from $200 – $1,000 per kilogram, suitable for semiconductor and energy applications.

Factors Influencing Silicon Powder Prices

• Particle size and purity
• Semiconductor-grade vs. industrial-grade requirements
• Processing complexity and production costs
• Order volume and specific applications

Conclusion

Silicon (Si) micron powder is a crucial material used across various high-tech and industrial applications due to its semiconductor properties, thermal conductivity, and chemical stability. With extensive uses in electronics, energy storage, metallurgy, and coatings, it remains an essential material for advanced technologies. Pricing is influenced by purity, particle size, and intended application.