Graphite E Beam Crucibles

• Thermal Efficiency:
  Graphite crucibles act as an effective thermal barrier between the melt and the water-cooled hearth.

  • Enhanced Deposition Rates: Deposition rates can increase by up to 400% at the same power level compared to a bare hearth.
  • Reduced Power Requirements: For the same deposition rate, power consumption can be reduced to 25% of the bare hearth’s power.

• Purity Standards:
  Each crucible undergoes rigorous purification to meet exacting purity levels:

  • Major contaminants like Fe, Si, Al, and Mg are reduced to less than 5 ppm.
  • No detectable levels of 16 other common metals, including Na, K, and Pb, ensuring clean evaporation.

• Durability:
  Graphite crucibles are built to withstand as many as 400 evaporation cycles, making them a cost-effective choice for high-volume operations.

• Material Compatibility:
  These crucibles are compatible with a wide range of materials, including:

  • Metals: Cr, Cu, In, Mg, Mo, Pt, Ta, Ti, Zn
  • Alloys: Al-Ge, Al-Si
  • Compounds: CdS, Na₃AlF₆, SiO₂, Y₂O₃

• Customization Options:

  • Taller crucibles hold more material but are unsuitable for multi-hearth furnaces not designed for their dimensions.
  • Model EVCEB-2 includes a top lip and has the same dimensions as EVCEB-4.

Important Note: These ultra-fine-grain, high-density graphite crucibles are distinct from “glassy” or vitreous carbon, which often cracks after just one use.