Oxidic monocrystals are used in the electronics and optical industry. When manufactured on the basis of the Czochralski process, high-purity powder is melted in spun or deep-drawn molybdenum or tungsten crucibles.

The starting crystals are clamped in seed chucks made of molybdenum. To increase the drawing speed, heat shields made of pure molybdenum are used.

PLANSEE supplies:

• Seamless crucibles made of molybdenum or tungsten
• Seed chucks
• Heat shields