Wear And Corrosion Resistant Silicon Nitride Ceramic Shaft

Wear And Corrosion Resistant Silicon Nitride Ceramic Shaft

Silicon nitride ceramics are an extremely important structural material known for their superhard properties.It not only has excellent lubricity and wear resistance, but also exhibits excellent corrosion resistance, with almost no reaction with other inorganic acids except hydrofluoric acid. In addition, Silicon Nitride Ceramic Shaft also have strong high temperature resistance, can resist thermal shock, even in the air heated to more than 1000 ° C and rapid cooling, or through rapid heating process, can remain crack-free.

Because of these excellent properties of Si3N4 ceramics, it is often chosen as a material for the manufacture of mechanical parts such as bearings.Key components such as gas turbine blades, mechanical seals and permanent molds can be made from silicon nitride ceramics.It is particularly worth mentioning that if the high temperature and heat transfer resistant silicon nitride ceramics are used to manufacture the heating surface of engine parts, it can not only significantly improve the quality of the diesel engine, but also effectively save fuel and improve thermal efficiency.Because of this, China, the United States, Japan and other countries have successfully developed diesel engines using this material.

Data Sheet↓

Color: Black Grey
Density: ＞3.2g/cm3
Hardness: HRA90
Vickers Hardness (Hv50): ＞1550 HV0.5
Modulus of Elasticity: 290Gpa
Flexural Strength: ＞600Mpa
Compressive Strength: 2500Mpa
Modulus of Elasticity(25°C): 65Gpa
Fracture toughness:＞6.0 Mpam1/2
Maximum Use Temperature: 1200°C
Thermal Conductivity:15-20 W(m.K)
Thermal Expansion Coefficient: ＞3.1 10-6/°C
Thermal Shock Resistance: 500 △T°C
Special Heat Capacity: 700 KJ/kg.K
Dielectric Strength: 1 KV/mm
Dielectric Constant: er

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