High Precision Machining Silicon Carbide Ceramic Bushing

Product detail

 Non-oxide ceramic, silicon carbide ceramic (SiC) is an superhard material which has moh's hardness up to 9.5. Silicon carbide ceramic not only has excellent mechanical properties at room temperature, such as high bending strength, excellent oxidation resistance, good corrosion resistance, high wear resistance and low friction coefficient, but also outstanding mechanical properties (strength, creep resistance) at high temperature, the high temperature strength can be maintained up to 1600°C, which is the best among all ceramic materials. The oxidation resistance of silicon carbide ceramic is also the best among all non-oxide ceramics.

Silicon carbide ceramic is widely used in automobile, mechanical and chemical industry, semiconductor, space technology, microelectronics, energy, papermaking and other fields, has become an ideal material for severe conditions of high temperature and pressure, corrosion, and abrasion.

Mascera produced silicon carbide ceramics in two forms, sintered silicon carbide (SSiC) and reaction bonded silicon carbide (SiSiC). 

Sintered silicon carbide ceramic is made of high-purity and nano-grade raw powders and sintered at a high temperature of 2100℃-2200℃, the sintering process will densify the green body and cause shrinkage approximately 20%; reaction boned silicon carbide uses micron-sized silicon carbide powder, the sintering temperature is 1450℃-1700℃, there is no shape shrinkage during sintering. The higher sintering temperature makes sintered silicon carbide having better performance, such as higher density, higher strength, better resistance to oxidation and corrosion; for applicatons which don't have so high properties requirement, reaction bonded silicon carbide is more cost effective.

Main properties of silicon carbide ceramic

• High strength in high temperature

• High-temperature oxidation resistance

• Excellent wear resistance

• Low thermal expansion coefficient

• High thermal conductivity

• Excellent thermal shock resistance

• High hardness

• Light weight because of low density
  

• Good corrosion resistance

Typical applications of silicon carbide ceramics

• Mechanial seal rings

• Balls, seats, liners for valve

• Kiln furniture

• Heat exchangers

• Fixed and moving turbine components

• Grinding media

• Military bulletproof plates

• Components for burners

• Ceramic bearings

Material Data Sheet

Available shapes of silicon carbide ceramics

1. Ceramic rod / ceramic pin / ceramic plunger

2. Ceramic tube / ceramic bushing / ceramic sleeve

3. Ceramic ring / ceramic washer / ceramic spacer 

4. Ceramic disc

5. Ceramic plate / ceramic block

6. Ceramic ball

7. Ceramic piston

8. Ceramic nozzle

9. Ceramic crucible
   

10. Other custom ceramic parts

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