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shaft sleeve for pump,
| Silicon Nitride has good high temperature strength, creep resistance and oxidation resistance. |
| In addition, its low thermal expansion coefficient gives good thermal shock resistance compared with most ceramic materials. Silicon Nitride is produced in two main ways; Reaction Bonded Silicon Nitride (RBSN), and Hot Pressed Silicon Nitride (HPSN) and Sintered Silicon Nitride (SSN). RBSN is made by direct reacting compacted Silicon powder with Nitrogen, and produces a relatively low-density product compared with Hot Pressed and sintered Silicon Nitride, however the process has only a small volume change allowing net shape forming. The HPSN and SSN material is made with sintering aids and offers better physical properties suitable for more demanding applications. |
| Typical Silicon Nitride applications include: |
| Bearing balls and rollers |
| Cutting tools |
| Valves, turbocharger rotors for engines |
| Turbine blades |
| Glow plugs |
| Molten metal handling |
| hermocouple sheaths |
| Welding jigs and fixtures |
| Welding nozzles |
