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Advanced Ceramics

SIN Wafers Silicon Wafer with Si3N4 Coating Advanced Silicon Nitride Wafer

Silicon nitride wafers are ultra-hard, thermally stable ceramic substrates with chemical inertness and biocompatibility. Used in semiconductors, MEMS, and aerospace for durability, efficiency, and precision.
INQUIRY
Description

Introduction of Silicon Nitride Wafer

Silicon Nitride (Si3N4) Wafers are high-performance semiconductor materials designed for precision applications in microelectronics, optoelectronics, and power systems. Built with ultra-high purity and surface perfection, these wafers deliver exceptional electrical insulation, thermal stability, and chemical resistance. They are widely used in wafer carriers, laser optics, and sensor manufacturing, ensuring reliability in extreme environments such as high-temperature processing and corrosive chemical exposure.


Silicon Nitride Wafer

 
Features of
Silicon Nitride Wafer
 

  1. ​High Hardness & Rigidity​​: Superior wear resistance and structural integrity, ideal for precision components.
  2. ​Low Thermal Expansion​​: Minimal thermal distortion ensures stability under extreme temperature fluctuations.
  3. ​Chemical Inertness​​: Resists corrosion from acids, alkalis, and solvents, making it suitable for harsh chemical processing.
  4. ​High Thermal Conductivity​​: Efficient heat dissipation for high-power and high-frequency devices.
  5. ​Biocompatibility​​: Safe for medical implants and biosensors.
  6. ​Electrical Insulation​​: Excellent dielectric properties for semiconductor applications.

 

Specifications of Silicon Nitride Wafer
 

Parameter Value/Range
Material Silicon Nitride (Si3N4)
Diameter 200–300 mm (standard)
Thickness 0.3–1.5 mm
Density 3.1–3.3 g/cm³
Bending Strength 800–1,000 MPa
Hardness (HV) 14–15 GPa
Thermal Conductivity 20–35 W/m·K
Max Operating Temp. 1,400°C (continuous)
Thermal Expansion Coeff. 2.7–3.0×10^-6/K (25–1,400°C)
Surface Roughness <1 nm Ra
Purity >99.99%

 

 

 
Applications of Silicon Nitride Wafer

  1. Semiconductor Manufacturing​​: Used as insulating layers, MEMS structures, and high-k dielectric films in ICs.
  2. ​Micro-Electro-Mechanical Systems (MEMS)​​: Enables vibration sensors, pressure sensors, and optical mirrors.
  3. ​Solar Cells​​: Acts as passivation layers to enhance efficiency and durability in photovoltaic devices.
  4. ​Medical Devices​​: Biocompatible coatings for implants and surgical tools.
  5. ​Aerospace & Defense​​: Thrusters, nozzles, and thermal protection systems due to high-temperature resilience.


 
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.


Packing and Storage
 

 
Company Profile

Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) is a trusted global chemical material supplier & manufacturer with over 12-year-experience in providing super high-quality chemicals and nanomaterials, including boride powder, nitride powder, graphite powder, sulfide powder, 3D printing powder, etc.
 
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 Wafer please feel free to contact us or click on the needed products to send an inquiry. 


Company Profile

 
PaymentTerm

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

ShipmentTerm

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

FAQs of Silicon Nitride Wafer

Q1: How does silicon nitride compare to silicon dioxide in semiconductor applications?​
Re: Silicon nitride offers higher thermal stability, lower stress, and better dielectric strength than SiO₂, making it suitable for high-power and high-frequency devices.
Q2: Can silicon nitride wafers be customized for specific resistivity?​
Re: Yes, doping adjustments allow tailoring of resistivity to meet application requirements (e.g., conductive or insulating layers).
Q3: What industries benefit most from silicon nitride wafers?​
Re: Semiconductors, aerospace, medical devices, MEMS, and renewable energy sectors.
Q4: Does purity affect performance?​
Re: Absolutely. Higher purity (>99.99%) ensures minimal defects, critical for high-reliability applications like aerospace.
Q5: Are silicon nitride wafers compatible with standard semiconductor processing?​
Re: Yes, they integrate seamlessly with photolithography, etching, and deposition techniques.

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