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Glasceramic
SQ-Glasses are synthetic quartz glasses produced from high purity SiCl4, by the flame pyrolysis method. These glasses are free of bubbles and inclusions and are distinguished from other glasses by good transmission in UV and visible spectral range. The types SQ0 – SQ2 are different regarding to homogeneity, layers, inclusions and transmission in the deep UV range.
Eigenschaften
Devitrification
1200 t0 1300 °C
Coefficient of thermal Expansion
Thermal conductivity (1000 °C)
Estimated costs of ownership (anno)
Slip at 1200 °C
Purity
Silicon
No
Stable
Similar to silicon wafer
Similar to wafer
100%
None
0.35
Quartz
Yes
Plastic, Warps
-5 Times less
-10 Times higher
-380%
N.A.
4.1
SiC
No
Stable
-1.85 Times more
-10% less
-195%
Yes
1.45
SiC
No
Stable
-1.85 Times more
-10% less
-195%
Yes
1.45
Bars
SQ-Glasses are synthetic quartz glasses produced from high purity SiCl4, by the flame pyrolysis method. These glasses are free of bubbles and inclusions and are distinguished from other glasses by good transmission in UV and visible spectral range. The types SQ0 – SQ2 are different regarding to homogeneity, layers, inclusions and transmission in the deep UV range.
Eigenschaften
Devitrification
1200 t0 1300 °C
Coefficient of thermal Expansion
Thermal conductivity (1000 °C)
Estimated costs of ownership (anno)
Slip at 1200 °C
Purity
Silicon
No
Stable
Similar to silicon wafer
Similar to wafer
100%
None
0.35
Quartz
Yes
Plastic, Warps
-5 Times less
-10 Times higher
-380%
N.A.
4.1
SiC
No
Stable
-1.85 Times more
-10% less
-195%
Yes
1.45
SiC
No
Stable
-1.85 Times more
-10% less
-195%
Yes
1.45
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