Silicon Carbide

SHAPES

Silicon Nitride ceramics are a range of hard wearing materials capable of withstanding extreme thermal shock and high temperatures.

The range is ideal for use in automotive engines as well as parts for gas turbines and rotors.

Key characteristics

  • Good thermal shock resistance
  • Creep resistance
  • Low density
  • High fracture toughness
  • High hardness and wear resistance
  • Electrical resistivity

Sintered Silicon Nitride Ceramics

SSN is a high purity grade of silicon nitride that is produced by dry or isostatic pressing to create complex net shapes. SSN has excellent thermal shock resistance and outstanding compatibility with non-ferrous molten metals. This lower cost alternative to the fully dense silicon nitride grades can be manufactured to close tolerance without the need for expensive diamond grinding.

Hot Pressed Silicon Nitride Ceramics

HPSN can be formulated into a variety of compositions and offers the highest strength of silicon nitrides.

Finishing Services

  • Precision grinding and machining
  • CNC machining and grinding
  • Lapping, polishing and threading
USED IN
  • Semi-Conductor Handling Parts
  • Wafer Processing Components
  • Bearing Balls and Rollers
  • Nozzles
Typical Composition
  • Silicon Nitride
  • Silicon Carbide
  • Iron Oxide
  

KEY DATA
SCB72 SCB75 SCB89
BULK DENSITY g/cm3 ≥2.67 ≥2.68 ≥2.60
APPARENT POROSITY % ≤17 ≤18 ≤18
MOR (20˚C) MPa ≥45 ≥50 25
HMOR (1400˚C) MPa ≥48 ≥52 50
CCS MPa ≥150 ≥195 ≥110
CONDUCTIVITY (@1000˚C) W/mK 16 20 17
CHEMICAL ANALYSIS
SiC % ≥71.5 ≥75.0 ≥89.0
Si3N4 % 0 ≥22.0 0
Iron Oxide – Fe2O3 % 0.3 ≤0.4 ≤0.3
The data provided is taken from average test results conducted under standard procedures and conditions and should not be used for specification purposes..

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