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Opaque Quartz Glass (OQG-B)

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Black quartz glass materials offer high purity, high optical absorption, high emissivity, and low thermal conductivity. Used in components such as shields and plates in furnaces.

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Black quartz glass materials offer high purity, high optical absorption, high emissivity, and low thermal conductivity. These properties enhance thermal uniformity in process environments and shield external radiation heat, thereby increasing the flexibility of thermal management. Additionally, compared to other black ceramics, they exhibit superior machinability.

Features：

  1. High purity
  2. High optical absorption
  3. Low thermal conductivity

 

Applications：

Used in components such as shields and plates in furnaces and other high-temperature processing equipment to improve thermal management and process stability.

 

Physical properties：

Item Unit Testing results
Density g/cm³ 2.19-2.20
Porosity   ＜0.5%
Pore size   ＜10μm
Expansion coefficient   0.57
Specific heat at 20℃ J/g.K 0.75
Max working temperature-continuous ℃ 1160
Max working temperature-short term ℃ 1300
Dielectric loss（room temperature）   90*10-4
Thermal conductivity at 20℃   1.59
     

 

Chemical purity：

Model Impurity Typical Value （ppm）
AI Ca Mg Cu Fe Ni Mn Li Na K Zr Ti B Co Total
OQG-W 11.57 0.90 0.03 0.0 0.77 0.02 0.00 0.25 0.91 0.31 1.52 1.21 0.02 0.00 17.50

 

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China high-purity quartz and processed products factory, Customizable and high-quality.

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