1 . Description
Silicon nitride has excellent thermal shock resistance, high mechanical strength at high temperatures, and good wear resistance. It is widely used in various industrial equipment.
2 . Features
- High strength over a broad temperature range
-Moderate thermal conductivity
-Low coefficient of thermal expansion
-Moderately high elastic modulus
-Excellent thermal shock resistance
-Ability to withstand high structural loads to high temperature
-Superior wear resistance
Unusually high fracture toughness
3 . Usage
Forming die parts (hot forging die, various forming)
Casting parts (low pressure casting, various metal melting furnace equipment)
Die casting machine parts (plunger, sleeve)
Welding machine (positioning pin for resistance welding, guide roller for steel pipe welding)
Parts of the powder squeezing machine (classifier, air squeezing machine, sand mill)
Wear-resistant parts (wire drawing machine guide roller, motor shaft, bearing, fishing tackle guide cup, traction winch)
Semiconductor manufacturing equipment parts (platform parts, linear motors)
4 . Performance Index Of Si3N4 Ceramics
|
Type
|
Condition
|
Performance
|
|
Main
Components
|
Normal Temperature
|
Si3N4≥95%
|
|
Bulk Density
g/cm3 |
Normal Temperature
|
3.22
|
|
Elastic Modulus
Gpa |
Normal Temperature
|
350
|
|
Vickers Hardness
HV |
Normal Temperature
|
1870
|
|
Bending Strength
Mpa |
Normal Temperature
|
780
|
|
Fracture Toughness
MPa·m1/2
|
Normal Temperature
|
7.2
|
|
Thermal Expansion Coefficient
10-6/K |
20－1000℃
|
3.2
|
|
Thermal Conductivity
W/(㎡·K) |
20－1000℃
|
25
|
