Introduction of Silicon Nitride Plates

Silicon Nitride Plate is a high-performance ceramic plate made of silicon nitride (Si₃N₄) with excellent resistance to high temperature, abrasion, and chemical stability. Silicon nitride is an advanced engineering ceramic material known for its high hardness, high strength, and thermal shock resistance. Widely used in high-temperature, corrosive, and high-wear industrial applications, silicon nitride plates are efficient, durable, and reliable engineering components.

Features of Silicon Nitride Plates

High hardness and abrasion resistance: the high hardness of silicon nitride can effectively resist abrasion and prolong service life.

Excellent high-temperature resistance: able to work stably in high-temperature environments above 1200°C.

Thermal shock resistance: able to withstand rapid temperature changes and suitable for frequent heating and cooling conditions.

Chemical stability: extremely resistant to acids, alkalis, and most molten metals.

Low density: low density (about 3.2 g/cm³) reduces equipment loads and is suitable for high-speed rotary applications.

High mechanical strength: high flexural strength and fracture toughness, able to withstand large mechanical stresses.

Electrical insulation: maintains good electrical insulation properties at high temperatures, suitable for electronic and electrical applications.

Low thermal conductivity: good thermal insulation properties, reducing heat loss and improving energy efficiency.

Parameters of Silicon Nitride Plates

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

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Applications of Silicon Nitride Plates

High-temperature industry: for furnace linings, insulation panels, and heating element support panels in high-temperature furnaces; in aerospace, for thermal protection systems and engine components.

Electronics and semiconductor industry: used as insulating and support boards in semiconductor manufacturing equipment; in high-temperature furnaces and vacuum equipment as high-temperature-resistant components.

Chemical industry: for reactor linings and isolation plates in corrosive media as corrosion-resistant components in high-temperature catalytic reactions and exhaust gas treatment equipment.

Machinery and tools industry: for wear-resistant parts of high-precision machinery and equipment, such as bearings, guide rails, and cutting platforms, as well as wear-resistant tables and guides in the textile and paper industries.

Energy sector: electrolyte support plates for solid oxide fuel cells (SOFC), as well as high-temperature resistant support and insulation components in solar and nuclear energy equipment.

Medical and laboratory equipment: support and reaction plates for high-temperature laboratory equipment, as well as high-temperature and corrosion-resistant components in medical equipment, such as dental tools and surgical instruments.

Environmental protection field: used as high-temperature and corrosion-resistant plates in exhaust gas treatment and catalytic reaction; as corrosion-resistant isolation plates in sewage treatment.

Company Profile

RBOSCHCO is a trusted global chemical material supplier & manufacturer with over 12 years experience in providing super high-quality chemicals and Nanomaterials.

The company has a professional technical department and Quality Supervision Department, a well-equipped laboratory, and equipped with advanced testing equipment and after-sales customer service center.

If you are looking for high-quality Silicon Nitride Plates please feel free to contact us or click on the needed products to send an inquiry. 

Payment Term

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

Packing and Storage

The product is in powder form and should be stored in a cool, ventilated place. Avoid inhalation when using it and keep away from open flames, heat sources, etc.

Shipment Term

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

FAQs of Silicon Nitride Plates

Question 1: What are the main application areas for silicon nitride plates?

Answer: Due to its excellent physical and chemical properties, silicon nitride plate is widely used in the following fields: electronics and semiconductor manufacturing: used as substrate or support structures, which can provide good electrical insulation and thermal conductivity, suitable for high-power electronic equipment; mechanical engineering: used as wear-resistant gaskets, seals, or other mechanical components, especially in high temperature and high-speed operating environment; aerospace: used in the manufacture of engine components such as turbine blades, combustion chambers, etc., which need to maintain stable performance at extreme temperatures; chemical industry: as reaction vessels, pump, and valve components, etc., which are resistant to the erosion of a variety of chemical media and ensure long-term reliable operation; metallurgy and casting: as molds, pouring tubes, etc. in the process of molten metal treatment, which is able to withstand high temperatures and wear.

Question 2: What are the advantages of silicon nitride plates over traditional ceramic plates?

Answer: Silicon nitride plate has several significant advantages over traditional ceramic plates: higher strength and hardness: the high strength and hardness of the silicon nitride material itself makes it more durable and especially suitable for harsh working conditions; better thermal shock resistance: it maintains structural integrity even under drastic changes in temperature and reduces the risk of thermal cracking; lower density: compared with traditional ceramics such as alumina, silicon nitride plate is lighter, helping to reduce equipment weight; excellent wear resistance: performs well in high-speed abrasive environments, extending service life; good chemical stability: highly resistant to most chemicals, reducing the potential for corrosion.

QUESTION 3: Why is silicon nitride sheet suitable for use in the electronics and semiconductor industries?

Answer: The reasons why silicon nitride plates are suitable for use in the electronics and semiconductor industries include: high temperature resistance: able to work stably in high-temperature environments where semiconductor materials are melted and crystals are grown; chemical stability: highly resistant to corrosion of chemicals used in the semiconductor manufacturing process; electrical insulation: maintains good electrical insulation properties at high temperatures, which makes it suitable for the manufacture of electronic components; and high precision: as a support plate or an insulating plate, it can ensure high-precision processing of semiconductor materials.

Question 4: Can silicon nitride plates withstand rapid temperature changes?

Answer: Silicon nitride plates have good thermal shock resistance and can maintain structural stability under rapid temperature changes. This is because silicon nitride has a low coefficient of thermal expansion and high fracture toughness, which effectively resists stresses caused by temperature fluctuations. However, despite this, extreme temperature fluctuations should be avoided as much as possible, especially during cold starts or sharp stops, to prevent potential thermal cracking. To optimize this characteristic, the rate and magnitude of temperature changes can be managed through precise design and operation.

Question 5: What is the role of silicon nitride plates in the machinery and tooling industry?

Answer: In the machinery and tooling industry, silicon nitride plates are mainly used in the following areas: Wear-resistant platforms: Used for cutting platforms and guides in high-precision machinery and equipment to prolong their service life; tables: Used as wear-resistant tables and guides in the textile and paper industries to improve productivity; support plates: Used as support plates for high-speed rotating equipment to reduce friction and wear.