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Silicon Nitride (si3n4) Properties And Applications
Silicon Nitride Si3N4 Ceramic is one kind of technical ceramic materials which has good comprehensive properties for different applications.
Its mechanical strength can be kept up to 1200℃. Its hardness and wear resistance performance ranks high among all technical ceramic materials.
It has high electrical resistivity, high dielectric constant and low dielectric loss, is a choice for electrical insulation.
Furthermore, it has good chemical stability and resistance to oxidation.
Properties | Unit | Value |
Color | - | Black |
Density | g/cm3 | ≥3.20 |
Vickers Hardness | Mpa | 1500 |
Modulus of Elasticity | Gpa | 300 |
Fracture Toughness | Mpa.m1/2 | 6.2 |
Flexural Strength(@R.T.) | Mpa | >720 |
Compressive Strength(@R.T.) | Mpa | 2200 |
Thermal Conductivity(@R.T.) | W/m.k | 15-20 |
Coefficient of Thermal Expansion | 10-6/℃ | 3.0-3.2 |
(25~1000℃) | ||
Poisson Ratio | - | 0.26 |
Max. Working Temperature | ℃ | 1200 |
Volume Resitivity (@R.T.) | Ω.cm | >1014 |
Dielectric Constant(1MHz, @R.T.) | - | 8.2 |
Dielectric Strength | Kv/mm | 16 |
Application:
Bearing balls and rollers
Cutting tools
Valves, turbocharger rotors for engines
Turbine blades
Diesel engine glow plugs
Molten metal handling
Thermocouple sheaths
Welding jigs, fixtures and nozzles
MKL FACTORY can produce various ceramic structural parts according to customer requirements.
We can produce with materials include ZrO2., SI3N4, AI2O3, SiC.
Products include various ceramic sliding bearings, ceramic seals, ceramic bushings, ceramic shaft cores, blocks, and ceramics. Standard parts, ceramic rods, ceramic roller needles.
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