What is Molybdenum Silicide?

How do you define it?

Molybdenum Silicide

Molybdenum Disilicide is an organic compound with the chemical composition MoSi2. It is a gray metallic liquid. Although insoluble in many acids, it is soluble in nitric acid and hydrofluoric acid. Both the radii of these atoms do not differ much, the electronegativities of both atoms is relatively close and their properties are similar to that of ceramics or metals. Molybdenum Disilicide can be made electricallyconductive at high temperatures. A passivation layer with silicon dioxide can then be placed on the surface. This will prevent any further oxidation. It’s used for high-temperature anti-oxidation coatings materials, electric heating element films, structural material, reinforcing agent for composite materials, wear resistant materials, and connecting materials for ceramics.

Molybdenum Siicide:

MoSi2 (intermediate phase) is the most silicon-rich in the MoSi binary alloy system. This is a Dalton-type, intermetallic compound having a fixed structure. This high-temperature material has great performance because of its dual qualities as a metal and ceramic. Excellent high temperature oxidation resistance. It can withstand temperatures up to 1600 degrees Celsius, equivalent to SiC. MoSi is soft and malleable, more so than metal. MoSi is used mainly as heating elements in integrated circuits.

MoSi2 consists of silicon and molybdenum bonded with metal bonds. In MoSi2, silicon and silicon are also bonded via covalent bonds. Molybdenum Disilicide is a gray, tetragonal crystalline. It is not soluble or soluble with common mineral acids such as aqua regia, but it can be dissolved in mixed acids of hydrofluoric and nitric acids. It can be used to heat elements in high-temperature (1700), oxidizing environments due to its high-temperature resistance.

An oxidizing atmosphere forms a protective layer on the surface dense quartz glass (SiO2) that has been heated to high temperatures. It prevents continuous molybdenum diilicide oxidation. SiO2 fused with SiO2 at 1710degC is what forms a protective coating. The action of expanding its surface causes it to lose its protective power. The oxidant acts on the element and forms a protective coating. The element can not be used at temperatures between 400 and 700 degrees C for an extended period of time because it is subject to strong oxidation.

Molybdenum Silicide Properties

Other Titles
molybdenum powder disilicide, MoSi2


Compound Formula

Molecular Weight

Gray powder to black powder

Melting Point
1900-2050 degC

Boiling Point

6.23-6.31 g/cm3

Solubility of H2O

Electrical Resistivity
0.0000270 – 0.0000370 ohm-cm

Specific Heat
0.437 J/g-degC (23 degC)

Tensile strength
185 MPa

Thermo Conductivity
66.2 W/m-K (23 degC)

Thermal Expansion

Vickers Hardness

Young’s Module


Molybdenum Silicon MoSi2 MoPowder CAS 12136-78-6

Molybdenum Silicide:

You can use molybdenum disilicide in high-temperature anti-oxidation materials, electric heating element elements, integrated electro films, structural materials and reinforcing agents to composite materials. Wear-resistant materials are also used. It is available in these industries.

  1. Electric heating elements for the energy chemical industry, high temperature heat exchanging devices of atomic reactors, gas burners, thermocouples with protective tubes and melting vessels, and crucibles (to melt sodium, lithium and lead as well as bismuth and other metals).
  2. MoSi2 and the other refractory metallic silicides, WSi2, TaSi2, are used in microelectronics. important candidates materials for large-scale interconnect films and integrated circuit gates.
  3. Aerospace: It has been thoroughly researched and used as a high temperature antioxidation coating. This material is especially useful for components of turbine engines such as propellers, blades and impellers.
  4. Automobile industry: engine parts, turbochargers, spark plugs, and valve bodies for automobiles.

Molybdenum Silicide’s main supplier

Buffalotours advanced Material Tech Co., Ltd., (Buffalotours), a professional

silicide dust

Over 12 years’ experience in developing and researching chemical products. You can pay by Credit Card, T/T or West Union. Trunnano ships goods by FedEx or DHL to overseas customers by air and sea.

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