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What is Molybdenum Silicide MoSi2 Powder?

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Introduction to Molybdenum Silicide MoSi2 Pulp

Molybdenum silicide

In 1906, it was discovered. In different circumstances, molybdenum, silicon, and molybdenum may form molybdenum trisilicides (Mo3Si), Molybdenum pentasilicates (Mo5Si3) and molybdenum dilicates (MoSi2), respectively. Molybdenum trisilicide (MoSi2) – a Dalton type intermetallic compound – is the most important. This crystal structure’s atomic arrangement demonstrates the coexistence between metal and covalent bonds. It also has exceptional high-temperature essential features.

Molybdenum Disilicide

It is an organic compound. The chemical formula for MoSi2 is gray metal solid. Although insoluble in many acids, it is soluble in hydrofluoric acid and nitric. Both types of atoms are similar in their radii as well as electronegativity. This is comparable to that found in metal and ceramic.

Molybdenum Disilicide

The surface is electrically conductive and, at high temperatures, forms a silicon dioxide passivation layer to protect it from further oxidation.

This material can be used as an integrated electrode film, high-temperature oxide-resistant coating, electrical heating elements, structural materials and composite reinforcement.

Molybdenum Siicide MoSi2 MoPowder’s Physicochemical Characteristics

MoSi2 refers to a form of intermediate phase that contains the highest amount of silicon in the MoSi binary alloy system. This is a Dalton type intermetallic compound having a fixed structure. The material is high-temperature and has great performance. It has both the characteristics of metal as ceramic. High-temperature oxidation resistance and resistance temperature to heat up to 1600; SiC equivalent. Moderate densities (6.24 g/cm3). Low thermal expansion coefficient (8.10-6K-1). Good electric conductivity. Higher brittleness and ductile transition temperatures (1000) than ceramics. This soft plastic is metallic-like. MoSi2 is used primarily as an integrated circuit, heating element and high temperature oxidation resistant coating.

MoSi2 consists of silicon and molybdenum bonded with metal bonds. While silicon and silicon are both bonded using covalent bonds, silicon and molybdenum are bonded through covalent bonds. Molybdenum is a grey tetragonal disilicide. Although insoluble in all mineral acids (including aqua-roya), it is soluble in nitric and hydrofluoric mixed acids. It can also be used as a high temperature (1700) heat element for oxidation atmosphere.

An oxidizing atmosphere forms a protective coating on dense quartz glass (SiO2) that has been heated to high temperatures. This prevents continuous oxidation. SiO2 protective layer is created when the temperature at which the heating element heats is above 1700. It is thickened to the melting point 1710, and then fused with SiO2 in molten droplets. Due to its surface-extending ability, the protective film loses its protection. The protective film is formed again when the element is continuously exposed to the oxidant. Due to the high oxidation rate at low temperatures, this element can’t be used long at 400-700.

Molybdenum Silicide MoSi2 Powder Properties
Additional Names Molybdenum disilicide (MoSi2) powder
No. 12136-78-6
Formula compound MoSi2
Molecular Weight 152.11
Appearance From gray powder to black powder
Melting Point 1900-2050 degC
Boiling Point N/A
Density 6.23-6.31g/cm3
Solubility in water N/A
Get the exact Mass 153.859261
Molybdenum Siliconicide MoSi2 MoSi2 powder CAS 12136-78-6

Molybdenum Siicide MoSi2 Powder Applications

MoSi2 is a common material in heating elements.

Heating elements with molybdenum disilicide

Can be used up to 1800°C in electric furnaces for production in electronics and glass. Although they are fragile, these parts can work at high power without ageing and their resistance does not change with time.

Molybdenum Silicide MoSi2 MoSi2 Powder Main Supplier

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