Why Use MoSi2 Heating Elements in High Temperature Furnaces?

Molybdenum disilicide heating element is a heating element based on molybdenum disilicide (MoSi2), which has excellent characteristics such as high temperature resistance, corrosion resistance, good air tightness, thermal shock resistance, and long service life. It is usually used in the ceramics, glass, metallurgy, magnetic materials, refractory materials, and other industrial high temperature furnaces. 

Compared with traditional heating elements, the specific advantages of MoSi2 heating elements are as follows:

1) The operating temperature is high. In an air environment, the operating temperature of the 1700-type element is 1700°C, and the operating temperature of the 1800-type element is 1800°C, and it can be used for a long time.

2) The heating speed is fast, and it can be raised from room temperature to the working temperature within a few hours, mainly due to the good electrical and thermal conductivity of MoSi2.

3) It is not easily deformed or oxidized at high temperature, mainly due to the small thermal expansion coefficient of MoSi2, and the SiO2 passivation layer is easy to form on the surface at high temperature to prevent further oxidation.

4) Low power consumption. Compared with heating elements such as graphite electrodes, can save more than 10% of electricity, mainly due to the low resistivity of MoSi2, which is 2×10-5Ω·cm.

5) Long service life. In addition to being able to work stably in a high temperature environment, it will not dissolve in most acidic and alkaline solutions, but will dissolve in nitric acid and hydrofluoric acid.

6) Eco-friendly. The MoSi2 electric heating element will not produce any pollutants during operation, it can be said to be zero emission, which meets the requirements of green environmental protection.

7) The installation and maintenance are convenient and quick. If the MoSi2 heating element is damaged during use, it can be replaced under the condition of ensuring safety and the furnace does not stop, so that the production efficiency will not be affected.

8) It is suitable for working at high temperature for a long time, especially for large-scale high-temperature kilns such as tunnel kilns, which can better play its characteristics under continuous working conditions.

If you have any inquiry of MoSi2 heating elements, please feel free to contact us:

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Molybdenum Disulfide Coating Is Used in Automobiles and Plastics Fields

Molybdenum disulfide coating, also known as MoS2 solid lubricating film, is a solid film formed by MoS2 powder and organic binders such as epoxy resin or inorganic binders such as sodium silicate, and then sprayed or brushed on the workpiece. It has good lubricating properties and is widely used in the fields of automobiles, mechanical equipment, and plastics.

From the point of view of performance, the friction coefficient of MoS2 coating is low (dynamic friction coefficient is 0.03, static friction coefficient is 0.07), which helps to avoid carbon accumulation, and is better than graphite and polytetrafluoroethylene. It has excellent high and low temperature resistance, can withstand loads of 10,000 psi, and has an operating temperature range of -460°F to 1200°F; excellent biocompatibility, compatible with most oils and greases, and maintains a hydrodynamic layer; excellent chemical stability, can prevent water, water vapor and acid from corroding metals; non-toxic, environmentally friendly, non-radioactive, etc.

The main reason why the friction coefficient of molybdenum disulfide coating is low is that MoS2 is a layered material with a sandwich structure, and the S-Mo-S unit layer is stacked. The atomic layers of molybdenum are connected by covalent bonds, and the unit layers are connected by van der Waals force.

From the point of view of use, MoS2 coating is mainly used in friction parts of mechanical equipment, which can improve the mechanical properties and service life of mechanical equipment, making it more suitable for use in extreme environments, and reducing maintenance problems and replacing new parts The probability. In addition, MoS2 dry film coating is also convenient to use, does not require heat curing or baking, does not require any chemical agents or adhesives, and can be directly coated or sprayed on parts.

Molybdenum disulfide and tungsten disulfide are used traditionally in greases for bit lubrication. If you have got the purchasing plans for them, please feel free to contact us. 

If you have any inquiry of molybdenum disulfide, please feel free to contact us:
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Molybdenum Sheet Price on Dec. 8, 2022

The latest price of φ100x0.5mm molybdenum sheet is USD7.80/PC, EXW XIAMEN, CHINA on Dec. 8, 2022. 

When your next application requires an element with a high melting point, high temperature strength, low coefficient of expansion and low vapor pressure at elevated temperatures, molybdenum is the material of choice. Molybdenum sheets can be used to manufacture electric light source parts, electric vacuum components and power semiconductors, as well as molybdenum boats, heat shields, and heating elements of high temperature furnaces.

Chinatungsten Online is the world's leading supplier of high-quality molybdenum sheet products, and can provide cold-rolled sheet products of various thicknesses and lengths according to customer requirements. Like all of our materials, our sheets start with metal powder, which is then pressed into ingots, sintered, and then rolled. This process allows us to customize products to meet specific material and performance requirements to ensure optimum performance in your application.

If you have any inquiry of molybdenum sheet, please feel free to contact us:

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Molybdenum Crucible Price on Dec. 8, 2022

The latest price of Φ410xΦ380x220mm molybdenum crucible is USD7,600.00/PC, EXW XIAMEN, CHINA on Dec. 8, 2022. 

Corrosion resistance, creep resistance and high temperature performance make molybdenum made crucibles very suitable for high temperature crystal growth processes. When sapphire is easy to extract, higher sapphire yield and quality can be achieved. The molybdenum-based crucible has heat resistance and a smooth surface, making it durable and cost-effective.

The surface roughness of the molybdenum crucible needs to be higher than 1.6 µm. When the surface of the crucible is rough, the sapphire is not easy to take out and it is easy to damage the crystal. In addition, the crucible will be damaged in the process. Chinatungsten Online's ultra-smooth crucible eliminates these problems. Sapphire manufacturers can benefit from this product because it eliminates complex and expensive processes. In addition, the smooth surface is resistant to corrosion caused by aggressively molten sapphire. This function can extend the service life of reusable crucibles.

Moly crucibles for sapphire growth furnaces are available with a variety of dimensions including round, in numerous standard diameters and wall thicknesses. Custom configurations are available. In addition, many other components for these furnaces are also customized.

If you have any inquiry of molybdenum crucible, please feel free to contact us:

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Molybdenum Foil and Tungsten Foil for Aluminum-ion Battery

Molybdenum foil is a very thin molybdenum sheet. Its thickness usually ranges from 0.002mm to 0.1mm and width should be ≥ 50mm. As the metal foil has the characteristics of high purity, low resistance, good electrochemical performance and chemical stability, it can be used as a current collector in aluminum ion batteries.  

Aluminum-ion battery is a rechargeable battery composed of negatively charged aluminum anode, positively charged graphite cathode, diaphragm and electrolyte, and has similar functions to lithium-ion batteries. Due to the abundant and easy availability of aluminum resources, the use of non-flammable and electrochemically stable electrolytes, and the high theoretical specific capacity of aluminum metal anodes, it has attracted great attention from energy storage researchers.

However, the development of aluminum-ion batteries also faces many problems, such as the current collector, the corrosion of the aluminum negative electrode, and the high cost of the electrolyte. Among them, current collectors with good effect are mostly metal molybdenum foil and tantalum foil with inert characteristics and stable performance within the corresponding voltage range in the electrolyte system, but these metals are rare metals and relatively expensive. 

Molybdenum foil has better electrochemical performance and chemical stability in aluminum ion batteries compared with other cheap metals such as nickel foil and titanium foil. Therefore, it can better ensure the stable operation of the battery. Studies have shown that nickel foil will have chemical corrosion in the aluminum ion battery system, and unfavorable side reactions will occur at low potentials, and the withstand voltage range is narrow.

Currently, moly foil, tantalum foil, nickel foil and titanium foil are all can be applied in batteries as current collectors. In addition, there is a new metal that was found to be usable as well – tungsten. The tungsten foil used in the batteries has advantages of stable electrochemical performance. 

As a professional manufacturer of tungsten and molybdenum for more than two decades, Chinatungsten Online can supply moly and tungsten foils as well as other finished products. 

If you have any inquiry of molybdenum foil, please feel free to contact us:

Email: sales@chinatungsten.com/sales@xiamentungsten.com

Tel.: +86 592 5129696/+86 592 5129595

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