Silicon Nitride Ring High Hardness And High Strength Si3N4 Ring

Overview of Silicon Nitride Ring

The silicon nitride ring is an advanced ceramic component made of silicon nitride (Si₃N₄), known for its excellent mechanical, thermal and chemical properties. These rings are designed to provide high strength, excellent wear resistance, low density, and superior fracture toughness, making them suitable for a variety of demanding applications.

Features of Silicon Nitride Ring

High Strength and Durability: Silicon nitride rings exhibit remarkable compressive and flexural strength, ensuring durability even under extreme conditions.

Excellent Thermal Properties: They maintain stability at high temperatures, up to 1200°C in continuous use and up to 1400°C intermittently, with minimal thermal expansion and outstanding thermal shock resistance.

Chemically inert: Highly resistant to corrosion by acids, alkalis and molten metals, making it ideal for aggressive chemical environments.

Low density: With a density of about 3.20 g/cm³, these rings reduce weight without compromising strength compared to metal alternatives.

Self-Lubricating: The inherent lubricity reduces friction, is beneficial for moving parts and leads to reduced maintenance needs.

Electrical Insulation: Excellent electrical resistivity makes silicon nitride rings suitable for electrical insulation applications.

Fracture Toughness: Superior fracture toughness ensures better impact resistance and reduced likelihood of cracking under stress.

Wear Resistance: The excellent wear resistance makes it suitable for high-wear applications such as cutting tools and bearings.

Biocompatibility: Suitable for medical applications due to biocompatibility and resistance to sterilization processes.

Specifications of Silicon Nitride Ring

Property	Specification
Material Composition	Si₃N₄ (Silicon Nitride)
Density	~3.20 g/cm³
Hardness (Vickers)	~1500-1800 HV
Fracture Toughness	~6-7 MPa·m½
Young’s Modulus (Elastic Modulus)	~280-320 GPa
Compressive Strength	~3000-4000 MPa
Flexural Strength (Bending Strength)	~800-1000 MPa
Coefficient of Thermal Expansion	~3.2 × 10⁻⁶ /°C (at room temperature to 1000°C)
Thermal Conductivity	~25-35 W/m·K
Max Service Temperature in Air	Up to 1200°C (continuous), up to 1400°C (intermittent)
Chemical Resistance	Excellent resistance to acids, alkalis, and molten metals
Electrical Resistivity	High (>10¹² Ω·cm at room temperature)
Wear Resistance	Excellent, suitable for high-wear applications
Thermal Shock Resistance	Outstanding, capable of withstanding rapid temperature changes
Corrosion Resistance	Superior, especially in aggressive environments
Self-Lubricating Properties	Reduces friction in moving parts
Biocompatibility	Suitable for medical applications
Environmental Impact	Environmentally friendly, no harmful substances
Ring Dimensions	Inner diameter, outer diameter, and thickness can be customized based on application requirements

Applications of Silicon Nitride Ring

Aerospace and Automotive: Utilized in turbine engines, exhaust systems, and other high-temperature components due to excellent thermal stability and resistance to thermal shock.

Manufacturing and Machining: Ideal for cutting tools, grinding wheels, and wear-resistant components, benefiting from high hardness and durability.

Chemical processing: Used in pumps, valves and piping systems where corrosion resistance is essential.

Medical devices: Suitable for surgical instruments and implants, with biocompatibility and anti-sterilization.

Ceramic bearings: Preferred for applications requiring minimal lubrication and high-speed performance, such as electric motors and industrial machinery.

Semiconductor manufacturing: The manufacture of equipment for processing wafers and furnaces using the purity and thermal stability of the material.

Energy: For fuel cells and nuclear reactors, silicon nitride must be able to withstand extreme conditions.

Company Profile

Advanced Ceramics founded on October 17, 2014, is a high-tech enterprise committed to the research and development, production, processing, sales and technical services of ceramic relative materials and products.. Since its establishment in 2014, the company has been committed to providing customers with the best products and services, and has become a leader in the industry through continuous technological innovation and strict quality management.

Our products includes but not limited to Silicon carbide ceramic products, Boron Carbide Ceramic Products, Boron Nitride Ceramic Products, Silicon Carbide Ceramic Products, Silicon Nitride Ceramic Products, Zirconium Dioxide Ceramic Products, Quartz Products, etc. Please feel free to contact us.(nanotrun@yahoo.com)

Payment Methods

T/T, Western Union, Paypal, Credit Card etc.

Shipment Methods

By air, by sea, by express, as customers request.

FAQs of Silicon Nitride Ring

Q: What are the main advantages of silicon nitride rings?

A: The main advantages include high hardness, good wear resistance, low density, good fracture toughness, good thermal stability, and good chemical inertness. These characteristics make silicon nitride rings ideal for high-performance applications under extreme conditions.

Q: In what industries are silicon nitride rings commonly used?

A: Silicon nitride rings are widely used in aerospace, automotive, manufacturing, chemical processing, medical devices, ceramic bearings, semiconductor manufacturing and energy. Their capability to endure harsh conditions and deliver consistent performance makes them highly versatile across various industries.

Q: How do silicon nitride rings perform at high temperatures?

A: Silicon nitride rings maintain their mechanical properties at elevated temperatures, performing reliably up to 1200°C continuously and up to 1400°C intermittently; this also renders them ideal for applications that demand high-temperature stability, such as turbine engines and exhaust systems.

Q: Is silicon nitride resistant to chemicals?

A: Yes, silicon nitride has excellent chemical inertia and corrosion resistance. It is resistant to acids, alkalis and molten metals, making it ideal for use in aggressive chemical environments such as pumps and valves.

Q: Can silicon nitride rings be used in medical applications?

A: Of course. Silicon nitride rings are biocompatible and antiseptic and are suitable for surgical instruments and implants. Their durability and inertia ensure the long-term performance of medical devices.