Silicon Nitride Rod High Hardness And High Strength Si3N4 Rod

Overview of Silicon Nitride Rod

Silicon nitride rods are advanced ceramic components made of silicon nitride (Si₃N₄) known for their superior mechanical, thermal, and chemical properties. These rods have high hardness, excellent wear resistance, low density and excellent fracture toughness, making them suitable for a variety of high-performance applications.

Features of Silicon Nitride Rod

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

Excellent Thermal Properties: Maintains 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 rods 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 rods suitable for electrical insulation applications.

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

Wear Resistance: Outstanding wear resistance makes silicon nitride rods ideal for high-wear applications like cutting tools and bearings.

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

Specifications of Silicon Nitride Rod

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

Silicon Nitride Rod

Applications of Silicon Nitride Rod

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 handling: Due to chemical inertiness, corrosion resistance is essential for use in pumps, valves and piping systems.

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: Use the purity and thermal stability of materials for wafer processing equipment and furnace components.

Energy sector: For fuel cells and nuclear reactors, silicon nitride’s ability to withstand extreme conditions is critical.

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 Rod

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

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 rods ideal for high-performance applications in extreme conditions.

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

A: Silicon nitride rods are widely used in aerospace, automotive, manufacturing, chemical processing, medical devices, ceramic bearings, semiconductor manufacturing and energy. Their versatility comes from the ability to endure harsh conditions while providing consistent and reliable performance.

Q: How does silicon nitride behave at high temperatures?

A: Silicon nitride maintains its mechanical properties at high temperatures, operating continuously and reliably at 1200°C and intermittently at 1400°C. This makes it suitable for applications that require 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 rods be used in medical applications?

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