Material Properties Comparison

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Put head-to-head with silicon carbide and quartz, poly silicon’s physical characteristics create a significant competitive advantage in the furnace environment.

For example, the identical Coefficient of Thermal Expansion (CTE) between a silicon wafer and a SiFusion poly silicon fixture eliminates backside wafer scratching and damage. The SiFusion patented poly silicon high temperature furnaceware also reduces fixture-related slip, eliminates wafer pinching, and allows for increased ramp rates and decreased stabilization times.

General Strength Comparison

Material

Specific Stiffness
Gpa/g/cm³

Poissons
Ratio v

Strength
MPa

Knoop Hardness
Kg/mm²

Thermal Shock
Figure of Merit

SiC CVD 145 0.21 600 2540 110
SiO2 30.3 0.17 110 460 4.8
Silicon 56.2 0.28 120 1150 41