Silicon Nitride Ceramic, Ceramic, Silicon Nitride manufacturer / supplier in China, offering Green Si3n4 Silicon Nitride Ceramic Part, Best Quality Translucent Alumina Ceramic Tube, Insect Evaporation Liquid Mosquito Wooden Wick and so on.
|Min. Order / Reference FOB Price||1 Piece||US $8/ Piece|
|Production Capacity:||50000000PCS Per Month|
|Payment Terms:||L/C, T/T, D/P, Western Union, Paypal, Money Gram|
|Name:||Green Si3n4 Silicon Nitride Ceramic Part|
Reaction bonded silicon nitride is made by direct nitridation of a compacted silicon powder, and because of the difficulty of ensuring complete reaction; it is hard to achieve a high component density.
Usual densities are in the range 2.3 - 2.5g/cm3 compared with 3.29g/cm3 for gas pressured sintered silicon nitride.
The higher density gives the HPSN, SSN & GPS-SSN materials better physical properties and means they are used in more demanding applications at very high temperature, especially for non-ferrous molten metal handling and thermocouple sheaths. The nitridation produces only a small volume change, which means that RBSN components do not need to be machined after fabrication and complex near net shapes can be produced in a single process stage.
SSN GPS-SSN HPSN RBSN
3.28 3.30 3.23 2.5
Young's Modulus (GPa)
285 320 315 189
Bend Strength (MPa)
675 750 850 440
Fracture Toughness K1c (MPa.m0.5)
6 7 8 2.5
16 16 16 7.2
Thermal Expansion Coefficient (x 10-6/°C)
3.2 3.2 3.2 3.2
Thermal Conductivity (W/m.K)
25 30 30 14
Maximum Temperature (°C) for application
Abrasive Wear resistance Parameter
1150 1150 1150 1100
9 9 9 7.5
1110 1130 1120 360