Types of Molybdenum Crucibles Manufactured by Different Processes

Molybdenum is a refractory metal known for its excellent strength at high temperatures, high melting point of 2610 ℃, and high corrosion resistance. This high melting point makes molybdenum ideal for use as evaporation boats or crucibles, and for processing nuclear fuel pellets at temperatures up to 1650°C. products made of molybdenum are durable enough to withstand repeated rough handling.

Molybdenum will not oxidize to any significant degree below 400 ℃ in air or an oxygen-containing atmosphere. At 400 ℃ and above, molybdenum oxide forms and begins to sublime. It is recommended that for high temperature applications, except for brief periods of time, fusion should be performed in a vacuum or an inert atmosphere. The crucible can then be heated to approximately 1700°C. 

The crucible is made of molybdenum powder, and the operating temperature is 1100℃~1700℃. Its high corrosion resistance to most acids and many molten materials makes it ideal for the metallurgical, mechanical and rare earth smelting industries. They can withstand vacuum thermal evaporation, nuclear fuel sintering, and capacitor sintering; can be used in LED sapphire crystal growth and chemical industries; and are increasingly used in evolving high-tech industries and crystal materials.

There are four main types of crucibles made by different processes:

1.Pressed and sintered crucibles

The powder is pressed and sintered into the final shape. They are one of the most popular types of crucibles.

2. Spin-formed crucibles

Large molybdenum plate blanks are hot spun formed to the specified product geometry

3. Milled crucibles

Material blanks are processed into final products. it is also very popular.

4. Riveting crucible

For large crucibles with thin walls, we recommend this kind of crucible. 

Chinatungsten Online can provide customized molybdenum crucibles according to customers' drawings, and we can also provide solutions for your research. We have a vertically integrated supply chain capable of refining molybdenum powder, pressing and sintering ingots, and cleaning crucibles.

If you have any inquiry of molybdenum crucible, please feel free to contact us:
Email: sales@chinatungsten.com/sales@xiamentungsten.com
Tel.: +86 592 5129696/+86 592 5129595

Fax: +86 592 5129797

Scan QR code of Chinatungsten WeChat platform to follow up the daily latest price and market of tungsten, molybdenum and rare earth.

Why Tungsten Crucibles and Molybdenum Crucibles Are Used for Sapphire Crystal Growth?

Crystal growth is the foundation of many cutting-edge technologies such as sapphire touchscreens, LED lighting components, solar cells and high-power lasers. Corrosion resistance, creep resistance and high temperature properties enable tungsten and molybdenum crucibles to be used for high temperature sapphire crystal growth processes.

Crucibles made of tungsten and molybdenum materials perform well in the heat exchanger method (HEM) process for melting and solidification of single crystals. Better sapphire yield and quality can be achieved when the sapphire is easy to extract. Chinatungsten Online's tungsten and molybdenum-based crucibles feature heat resistance and smooth surfaces, making them durable and cost-effective. They are also corrosion resistant and have a high material density.

The crucible is made of tungsten or molybdenum material with high surface roughness. When the surface of the crucible is rough, the sapphire is not easy to be taken out, and the crystal is easily damaged. In addition, the crucible is also damaged in the process. Therefore, the surface smoothness of the crucible needs to be guaranteed during the production process, and sapphire manufacturers can also benefit from this product because it eliminates complex and costly processes. In addition, the smooth surface resists corrosion caused by aggressive fused sapphire, which can extend the life of reusable crucibles.

In addition, during the production process, the purity of the finished product needs to be guaranteed. The high-purity crucible will not contaminate the single crystal and ensure the quality of the finished single crystal.

Chinatungsten Online/CTIA GROUP LED has extensive expertise in powder metallurgy and has developed high-purity and high-density crucibles with uniform wall and bottom thicknesses, which are key prerequisites for excellent creep resistance. Molybdenum and tungsten crucibles are developing in multiple dimensions. Many customers and major manufacturers around the world have successfully used these crucibles.

If you have any inquiry of molybdenum crucible, please feel free to contact us:
Email: sales@chinatungsten.com/sales@xiamentungsten.com
Tel.: +86 592 5129696/+86 592 5129595

Fax: +86 592 5129797

Scan QR code of Chinatungsten WeChat platform to follow up the daily latest price and market of tungsten, molybdenum and rare earth.