Main Products: silicon nitride ball ,silicon nitride parts ,full ceramic bearing ,hybride ceramic bearing ,ceramic valve
High precision silicon nitride washer
USD $5 - $10 /Piece
Min.Order:100 Pieces
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Beijing Sinoma Synthetic Crystals Co., Ltd.
Beijing ChinaMain Products: silicon nitride ball ,silicon nitride parts ,full ceramic bearing ,hybride ceramic bearing ,ceramic valveProduct Details
Si3N4 ceramic ring, industrial ceramic ring, sintered ceramic ring, SPS ceramic ring,
1.material: silicon nitride ceramic
2.type of the sintering: GPS
3.usage for the chemical, electrical, mechanaical, melting
4.high hardness,
5, high temperature resistance, up to 1500C
6.acid-resistance,
7.chemical resistance
Usage: Sealing rings for vacuum pump, acid alkali, salt, measure pumps, flowmeter and deep well pump and various rotary sealing rings,valves.
A wide range of applications:
Chemical resistance, High temperature application, Friction, High speed, Aircraft accessory, Semiconductor, Food processing, Dental handpiece turbines.
Character:
Resistance to strong acid, strong alkali, salt and gas of deleterious, long life, high hardness, resistance to wear, especially resistance to hydrofluoric acid.
Silicon Nitride(Si3N4)Ceramic Characteristics
Density g/cm3 | Relative density % | Elastic modulus GPa |
Compression strength ratio(25°C) % | Hardness GPa |
3.24 0.02 | >99.5 | 300~320 | 40~50 | 16 - 20 |
Fracture toughness /MPa•m1/2 | Bending strength MPa | Poisson's ratio | Linear expansion coefficient 10-6K-1 | Webuller modulus |
6.0~9.0 | 900~1000 | 0.25 | 3.1~3.3 | 12~15 |
Thermal conductivity W•(m•K)-1 | Specific resistance ratio | Corrosion resistance | Size stability | Magnetic |
15~20 | 1018 | Excellent | Excellent | NO |
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