Vacuum Annealing Molybdenum Crucibles Bright Surface , Machined Surface
molybdenum is widely used in core containers in industrial furnaces such as sapphire single crystal growth furnaces, quartz glass melting furnaces, rare earth smelting furnaces, etc., and its working temperature environment is generally above 1400 ° C. Especially for sapphire single crystal growth furnaces, such as degree, no internal crack, accurate size, smooth inside and outside walls, etc.
Parameters
Atomic number | 42 |
CAS number | 7439-98-7 |
Atomic mass | 95.94 [g/mol] |
Melting point | 2620 °C |
Boiling point | 4639 °C |
Density at 20 °C | 10.22 [g/cm³] |
Crystal structure | Body-centered cubic |
Coefficient of linear thermal expansion at 20 °C | 5.2 × 10-6 [m/(mK)] |
Thermal conductivity at 20 °C | 142 [W/(mK)] |
Specific heat at 20 °C | 0.25 [J/(gK)] |
Electrical conductivity at 20 °C | 17.9 × 106 [S/m] |
Specific electrical resistance at 20 °C | 0.056 [(Ωmm2)/m] |
Features
High melting point
High thermal conductivity
Low vapor pressure
Excellent corrosion resistance against molten metals and glass
Application
Molybdenum crucible is widely used as furnace crucible.
Molybdenum crucibles of different sizes are used in the artificial crystal
Vacuum coating industry
Rare earth industry
Sapphire crystal furnace industry
Magnetic material industry
Metallurgical industry
mechanical processing industries
Monocrystalline silicon
solar energy