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Processing and customization of silicon nitride ceramic parts

Processing and customization of silicon nitride ceramic parts

  • Processing and customization of silicon nitride ceramic parts
  • Processing and customization of silicon nitride ceramic parts
  • Processing and customization of silicon nitride ceramic parts
Processing and customization of silicon nitride ceramic parts
Product Details:
Place of Origin: Jiangsu, China
Brand Name: Weite ceramics
Certification: ISO9001
Model Number: wtdhgtc
Payment & Shipping Terms:
Minimum Order Quantity: 50piece
Price: Negotiate
Packaging Details: carton
Supply Ability: 100000 per month
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Detailed Product Description
Features: Wear-resistant/insulation Material: Silicon Nitride Ceramics
Colour: Dark Grey Place Of Origin: Jiangsu, China
Density: >3.2(g/cm3) Maximum Operating Temperature: 1600
Apparent Porosity%: 0 Application: Polysilicon Industry

 

Processing custom silicon nitride ceramic parts

 

Product Overview

 

Silicon carbide has two main crystal structures, namely cubic β-SiC and hexagonal-SiC. The basic structural unit of silicon carbide crystal is SiC and CSi tetrahedrons interspersed with each other. The tetrahedrons share the same edges to form a plane layer, and are connected with the next stacked tetrahedrons to form a three-dimensional structure. Because the tetrahedral stacking order can form different structures, hundreds of variants have been found. Generally, the letters C (cubic), H (hexagonal), and R (rhombic) are used to indicate the lattice type, and the number of layers contained in the unit cell is used to indicate the difference. For example, nH indicates that there are n layers of repeating periods along the c axis. The hexagonal structure of, and mR represents a rhombohedral structure with m layers of repeating periods along the c axis.

 

Processing and customization of silicon nitride ceramic parts 0

 

Product parameter table

 

Colour dark grey
Density (g/cm3) >3.2
Relative density 99%
 Hardness (HV) 14-16
 Fracture toughness (MPa•m1/2) 6-7
 Normal temperature flexural strength (MPa) 600-800
 Coefficient of expansion (μm/K)  20-400℃ 3.2
400-1000℃  4.3 
Dielectric strength (KV/mm) >13
Resistivity
(Ω·cm)
 20℃ >1014
500℃ >1011
 Thermal conductivity (W•(m•K)-1) 15-22
Acid and alkali corrosion resistance excellent
Thermal shock resistance ΔT℃ 1300
Maximum operating temperature 1600
Apparent porosity% 0

 

Processing and customization of silicon nitride ceramic parts 1

 

Product features

 

The high hardness of the silicon carbide ceramic tube is because the hardness of the silicon carbide is quite high, the Mohs notch hardness is 9.2, and the Kjeldahl microhardness is 2200~2800kg/mm2 (load 100g).

And although the hot hardness of silicon carbide decreases with increasing temperature, the compressive strength of silicon carbide is 224MPa, and the flexural strength of silicon carbide is 15.5MPa.

Silicon carbide is synthesized at high temperature, so silicon carbide ceramic tubes are mostly prepared at high temperature or used at high temperature.

Processing and customization of silicon nitride ceramic parts 2

 

Applications

 
This product has been widely used in polysilicon reduction furnaces, military manufacturing, aviation, and power.


Processing and customization of silicon nitride ceramic parts 3
 

Product Picture

 

The average thermal expansion coefficient of silicon carbide can be 4.4×10-6/℃ in the range of 25~1400℃. The measurement results of the thermal expansion coefficient of silicon carbide show that its value is much smaller than other abrasives and high-temperature materials. For example, the thermal expansion coefficient of corundum can be as high as (7~8)×10-6/℃. The thermal conductivity of SiC is very high, which is another important feature of the physical properties of silicon carbide ceramic tubes.

Its thermal conductivity is much larger than other refractory materials and abrasives, about 4 times the thermal conductivity of corundum. Therefore, silicon carbide has a low coefficient of thermal expansion and high thermal conductivity, so the silicon carbide ceramic tube receives less thermal stress during the heating and cooling process, which is why the silicon carbide ceramic tube has particularly good thermal shock resistance.

 

Processing and customization of silicon nitride ceramic parts 4

 

Product packaging

 
Carton packaging or according to customer requirements
Processing and customization of silicon nitride ceramic parts 5

FAQ

 
1. Are you a businessman or a manufacturer?
We are a company, we have our own factory
2. How long is your delivery time?
Negotiable
3. Can the product be customized?
Can be customized
4. What is the product packaging?
Carton or according to customer requirements

Contact Details
Yixing Weite Chinaware Co., Ltd

Contact Person: wei.teci

Tel: +8613801535622

Send your inquiry directly to us
Yixing Weite Chinaware Co., Ltd
Hongwei Development Zone, Dingshu Town, Yixing City, Jiangsu Province
Tel:86--13921342218
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