Silicon Nitride

Silicon nitride powder is a high-performance ceramic material known for its exceptional hardness, thermal stability, oxidation resistance, and corrosion resistance. Thanks to its excellent mechanical, thermal, and chemical properties, it is widely used in advanced ceramics, refractory materials, wear-resistant components, and composite materials.

VIMATERIAL supplies high-purity silicon nitride powder with controlled particle size distribution and excellent sintering activity. Multiple purity grades and particle sizes are available to meet research, industrial, and customized production requirements. Contact us for more information.

Characteristics of silicon nitride powder:

Features

• High purity with low impurity levels
• Uniform particle size distribution
• High specific surface area and excellent sintering activity
• Excellent thermal and chemical stability
• High hardness and low friction coefficient
• Outstanding oxidation and corrosion resistance
• Suitable for both nano- and micron-scale ceramic applications

Applications of Silicon Nitride Powder

• Advanced Ceramics: Structural ceramics, bearings, rollers, bushings, valves, and nozzles requiring excellent wear resistance, high-temperature stability, and corrosion resistance.
• Surface Coatings: Wear-resistant coatings, protective coatings, thermal spray materials, and cutting tool coatings.
• Composite Materials: Reinforcement for metal, ceramic, rubber, plastic, coating, and polymer matrix composites.
• Refractory & High-Temperature Materials: Refractory products, kiln furniture, and quartz crucible release agents.
• Electronics & Functional Materials: Self-lubricating films, coating additives, and other high-performance functional materials.

Packaging & Storage

• Moisture-proof, vacuum-sealed packaging with custom packaging options available.
• Store in a cool, dry, and well-ventilated place with the container tightly sealed.
• Protect from moisture, excessive pressure, and strong oxidizing agents to preserve product quality and dispersibility.

Why Choose Our Silicon Nitride Powder?

• High purity
• Nano and micron particle sizes available
• Consistent particle size distribution
• Stable batch-to-batch quality
• Custom specifications supported
• Suitable for research and industrial production

Looking for high-purity silicon nitride powder? Contact VIMATERIAL for customized particle sizes, purity grades, and technical support for research and industrial applications.

FAQs

Q1: What is silicon nitride powder used for?

Silicon nitride powder is widely used in advanced ceramics, wear-resistant components, refractory materials, composite materials, thermal spray coatings, and high-temperature engineering applications. It is also used in quartz crucible release agents and other functional materials requiring excellent mechanical strength and thermal stability.

Q2: What particle sizes can you supply?

We offer both nano-sized and micron-sized silicon nitride powder. Standard particle sizes include 100 nm, 500 nm, 800 nm, 3 μm, 5 μm, and 10 μm. Other particle sizes are available upon request.

Q3: What is the difference between α-Si₃N₄ and β-Si₃N₄?

The α phase has higher sintering activity and is commonly used as a raw material for manufacturing dense silicon nitride ceramics. The β phase offers excellent mechanical strength, fracture toughness, and thermal stability, making it suitable for high-performance structural ceramic applications.

Q4: Is customized particle size available?

Yes. VIMATERIAL provides customized particle sizes, purity levels, and other specifications to meet the requirements of research, development, and industrial production.