Overview of Silicon Nitride Ceramics

Silicon Nitride Ceramics are high-performance materials known for their excellent mechanical properties, including strength, toughness, and resistance to wear, corrosion, and thermal shock, making them ideal for demanding applications in various industries.

Features of Silicon Nitride Ceramics

Exceptional hardness and wear resistance.

Superior mechanical strength and fracture toughness.

Excellent thermal stability and resistance to thermal shock.

High corrosion resistance in aggressive environments.

Low density contributing to lightweight components.

(High Purity Silicon Nitride Si3N4 Ceramic Protection Tube)

Specifications of High Purity Silicon Nitride Si3N4 Ceramic Protection Tube

High Purity Silicon Nitride Si3N4 Ceramic Protection Tube is designed for demanding high-temperature and corrosive environments. The material is 99.9% pure, ensuring minimal impurities for consistent performance. It operates effectively in temperatures up to 1300°C in air and 1800°C in inert atmospheres, making it ideal for extreme thermal conditions.

The tube features exceptional mechanical strength, with a Vickers hardness of 1600-1800 HV. This hardness resists wear and deformation under heavy loads. Its fracture toughness of 6-7 MPa·m¹/² prevents cracking under sudden stress. The low density of 3.2 g/cm³ reduces weight without sacrificing durability.

Thermal shock resistance is a key advantage. The material withstands rapid temperature changes from 1000°C to room temperature without damage. This property ensures reliability in applications involving frequent heating and cooling cycles.

Chemical stability is another critical feature. The tube resists corrosion from acids, alkalis, and molten metals. It performs well in oxidizing and reducing atmospheres, maintaining structural integrity over long-term use.

Electrical insulation properties are strong, with a volume resistivity of 10¹³-10¹⁴ Ω·cm at room temperature. This prevents current leakage in high-voltage or high-frequency environments. The dielectric constant remains stable across a wide temperature range, ensuring consistent performance.

Standard dimensions include outer diameters from 5 mm to 50 mm, lengths from 100 mm to 1000 mm, and wall thicknesses from 1 mm to 10 mm. Custom sizes are available to meet specific requirements. Surface finishes can be polished or coated for enhanced performance in specialized applications.

Applications include thermocouple protection in metallurgy, semiconductor processing equipment, aerospace components, and laboratory instruments. The tube shields sensors and instruments from harsh conditions, extending service life and measurement accuracy.

Material composition is strictly controlled, with silicon nitride content exceeding 99.9%. Trace elements like aluminum, oxygen, and yttrium are minimized to avoid compromising performance. Manufacturing uses advanced sintering techniques to achieve high density and uniformity.

The product meets international standards for industrial ceramics, including ISO and ASTM specifications. Quality assurance includes rigorous testing for density, porosity, and thermal properties. Each batch is certified to ensure compliance with technical requirements.

Packaging uses shock-resistant materials to prevent damage during shipping. Custom packaging solutions are available for bulk orders or fragile configurations. Lead times vary based on order size and customization needs. Technical support is provided to assist with material selection and application-specific challenges.

(High Purity Silicon Nitride Si3N4 Ceramic Protection Tube)

Applications of High Purity Silicon Nitride Si3N4 Ceramic Protection Tube

High purity silicon nitride (Si3N4) ceramic protection tubes are used in many industries. They handle extreme conditions. These tubes work well in high-temperature settings. They stay stable even above 1200°C. This makes them ideal for protecting sensors in furnaces or molten metal processing. Their thermal shock resistance prevents cracking when temperatures change fast.

Chemical resistance is another key feature. Silicon nitride does not react with most acids, alkalis, or corrosive gases. This helps in chemical processing equipment. The tubes last longer in aggressive environments. They reduce downtime for replacements.

Electrical insulation properties are strong. Silicon nitride keeps high electrical resistance even at high temperatures. This is useful in semiconductor manufacturing. The tubes shield components during processes like CVD or plasma etching. They prevent electrical interference.

Mechanical strength matters. These tubes resist wear and abrasion. They perform in harsh industrial machinery. Aerospace and automotive industries use them for parts exposed to friction. They maintain integrity under heavy loads.

Thermal conductivity is low. This helps in applications requiring heat containment. Power generation systems use the tubes to insulate hot sections. Energy efficiency improves by minimizing heat loss.

Biocompatibility adds value. High purity silicon nitride is safe for medical uses. It works in sterilizable equipment or implants. The material does not trigger harmful reactions in the body.

Precision manufacturing ensures consistent quality. The tubes are made with advanced sintering techniques. This guarantees smooth surfaces and tight tolerances. Custom sizes and shapes are available for specific needs.

Durability reduces maintenance costs. Industries save money over time. The tubes withstand repeated thermal cycles and mechanical stress. Performance stays reliable in long-term operations.

High purity silicon nitride ceramic protection tubes solve challenges in demanding settings. They combine heat resistance, chemical stability, and mechanical toughness. These features make them a practical choice for advanced engineering applications.

Company Introduction

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.

5 FAQs of High Purity Silicon Nitride Si3N4 Ceramic Protection Tube

What is High Purity Silicon Nitride Si3N4 Ceramic Protection Tube used for?
This product protects sensors or equipment in high-temperature environments. It works in industrial furnaces, semiconductor processing, or aerospace applications. The material resists heat, corrosion, and wear. It keeps sensitive parts safe under extreme conditions.

How much heat can the protection tube handle?
It withstands temperatures up to 1200°C in air. In inert gases or vacuum environments, it tolerates higher temperatures. This makes it suitable for processes needing stable performance under intense heat.

Is the tube resistant to chemical damage?
Yes. Silicon nitride resists acids, alkalis, and molten metals. It performs well in harsh chemical settings. This reduces wear from reactions or corrosion. The high purity ensures minimal contamination in sensitive applications.

How does it compare to alumina or zirconia tubes?
Silicon nitride lasts longer under thermal shock and mechanical stress. It has better fracture toughness. Alumina or zirconia may crack faster during rapid temperature changes. This tube maintains strength in fluctuating conditions.

Can the tube be customized for specific needs?
Dimensions, surface finish, and connection methods are adjustable. Custom shapes or sizes fit unique equipment setups. Manufacturers provide tailored solutions based on application requirements.

(High Purity Silicon Nitride Si3N4 Ceramic Protection Tube)