Molybdenum crucible material characteristics

High melting point:

The melting point of molybdenum is as high as 2610℃, which allows the molybdenum crucible to remain stable in high temperature environments, withstand the temperature requirements of most high-temperature smelting and heat treatment processes, and can be used stably in working temperature environments above 2000℃.

Good thermal conductivity:

Molybdenum has excellent thermal conductivity, which can quickly and evenly transfer heat, ensuring that the materials in the crucible are heated evenly, which is conducive to improving the accuracy and efficiency of experiments and production.

Low thermal expansion coefficient:

This feature makes the size of the molybdenum crucible change less when the temperature changes, reduces the risk of rupture caused by thermal expansion and contraction, and increases the service life of the crucible.

Corrosion resistance:

Molybdenum has good corrosion resistance to many chemicals, can resist the erosion of most acids, alkalis and molten metals, and is suitable for handling various chemicals and conducting different types of experiments and industrial production.

High strength and high hardness:

Molybdenum crucible has high strength and hardness, can maintain good mechanical properties at high temperature, is not easy to deform and damage, can withstand greater pressure and weight, and is suitable for some processes that need to be carried out under high pressure or heavy load conditions.

Molybdenum crucible production process and type characteristics

Sintered molybdenum crucible:

Molybdenum powder is loaded into a mold, pressed into shape, sintered, and then lathe processed. Its characteristic is that it can produce large-sized crucibles, which can meet the needs of some large-scale industrial production.

Forged molybdenum crucible:

It is made by turning forged molybdenum rods. It has the characteristics of high density and durability. It shows good stability and fatigue resistance under long-term high-temperature use environment.

Machine-added molybdenum crucible:

It is mainly a small-sized crucible, which is made of molybdenum rods through lathes. It has high dimensional accuracy and is suitable for experiments and small-scale production processes with strict requirements on crucible size.

Spinning molybdenum crucible:

It is a thin-walled crucible formed as a whole by a spinning process with a molybdenum plate. It is characterized by thin wall thickness, good thermal conductivity, and can quickly transfer heat and improve production efficiency.

Welded molybdenum crucible:

It is made by welding after being processed and formed by a template. Crucibles of different shapes and structures can be designed and manufactured according to special needs, with strong flexibility.

Application fields of molybdenum crucible

Metallurgical industry:

Molybdenum crucibles are used in metal smelting and forging processes at high temperatures, such as slag melting, furnace bottom protection and molten iron pouring in steel smelting. They can also be used to study the physical and chemical behavior of metals under different temperatures and stresses.

Rare earth industry:

In rare earth smelting furnaces, molybdenum crucibles are used as core containers. Due to their high purity and corrosion resistance, they can ensure the purity and stability of the rare earth smelting process.

Crystal growth field:

For example, in sapphire single crystal growth furnaces, molybdenum crucibles with high purity, high density, no internal cracks, precise size, smooth inner and outer walls play a key role in the success rate of seeding, quality control of crystal pulling, decrystalline sticking and service life of sapphire crystals during growth.

Electronic industry:

Molybdenum crucibles can be used to prepare and test semiconductor materials, such as silicon, to prepare and process semiconductor materials at high temperatures to ensure the quality and performance of materials. They can also be used to prepare other electronic components, such as electronic ceramics, resistors and electrodes.

Vacuum coating industry:

Molybdenum crucible is an indispensable consumable in the vacuum coating process. It not only ensures that the coating material can evaporate into gas state at high temperature, but also provides a pure deposition environment for these vapors, ensuring the high-quality growth of thin films.

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