Sintered Molybdenum Crucible

In heavy industries such as sapphire growth, rare earth refining, and quartz glass smelting, the size and life of the container often determine the profitability of the production line. With its excellent bearing capacity and thermophysical stability, sintered molybdenum crucible has become an irreplaceable core in large-scale high-temperature thermal fields.

1. Basic characteristics: Mechanical balance at extreme high temperatures

Sintered molybdenum crucible is made of high purity molybdenum powder by powder metallurgy process. It has extremely high temperature resistance and can withstand extreme heat up to 2000 °C under vacuum or reduction.

Its density can reach 9.4 g/cm ³ to 9.8 g/cm ³, ensuring excellent permeability during smelting. It has a very low thermal coefficient and can significantly risk deformation during heating and cooling cycles, protecting expensive melted crystals.

2. Implementation standards: Strict standards

We provide not only products, but also guarantees of compliance with international industrial standards. Our sintered molybdenum crucibles comply with ASTM B387 standard.

With a purity of 99.95%, and strictly control gas impurities and metal impurities through ICP spectrophotometric analysis.

3. Production Process: Transition from Microscopic Powder to Macroscopic Component

Our sintering process uses modern fine control technology. We use isostatic pressing molding technology to ensure that large-size billets are uniformly stressed in all directions, resulting in a highly consistent initial density.

Then, we perform long-term high-temperature sintering in a vacuum or hydrogen-protected furnace to fully cross-link the molybdenum particles.

Finally, we perform fine machining to ensure that the dimensional tolerances and surface finish meet the requirements.

4. Common specifications and sizes (advantages of large size)

Our sintering process can break through the size limit. We can provide sintering molybdenum crucibles with :

Diameter of 100mm to 800mm etc

Height of 150mm to 1200mm etc

Wall thickness of 8mm to 30mm etc

We also offer fixed service, including with cover design, bottom groove design or special tapered construction.

5. Product features and unique advantages

Our sintered molybdenum crucibles are the most economical and reliable choice for manufacturing large crucibles with diameters over 300mm, with the ability to customize oversized specifications.

It has a larger thermal capacity, which can effectively buffer thermal field fluctuations and is conducive to the growth of high single crystals.

After special polishing, the melt and crucible wall can be wetted, and the product recovery rate can be improved.

6. Application fields: covering high-end manufacturing fields

Our sintered molybdenum crucibles are widely used in the fields of LED and optics, rare earth industry, quartz glass and coating technology.

It is a key container for sapphire single crystal growth furnaces, and is also used for the refining and smelting of rare earth metals and oxides.

It acts as a high-temperature core heating and melting component in quartz continuous melting furnaces. In large-scale industrial vacuum evaporation equipment, it is used as a material source to carry.