Due to their good corrosion resistance against sapphire melt and their high-temperature creep resistance, crucibles made of refractory metals are used for sapphire crystal growing in all common processes.

• pressed sintered molybdenum and tungsten crucibles for thick walls with a very long lifetime and high creep resistance

• formed crucibles for very thin walls up to 6 mm with 100% density

• stable production quality

• successfully tested by all main sapphire producers worldwide

• Molybdenum (pressed sintered or formed)
• Tungsten (pressed sintered or formed)
• Tantalum (formed)
• Niobium (formd)

Finished parts:

• Crucibles in various dimensions and shapes, with diameters between 50 and 800 mm (depending on the material and production process)
• Wall thickness from 0.02 to 50 mm (depending on the material and production process)  
• Hot zones in customized design for optimized lifetime and energy efficiency
• Spare parts for all kinds of hot zones

Semifinished products:

• Molybdenum and tungsten sheets in various dimensions
• Rods and sheets made of  ML, TZM and WVM for increased creep resistance
• Laser and / or waterjet cut prematerials on request

Interested?

Contact Heike Larcher under heike.larcher@plansee.com or call right away: +43 5672 600-2847.
Heike is looking forward to your request.