Molybdenum disilicide components for 1300-1700 ℃ high temperature furnace​

Introduction of molybdenum disilicide electric heating element

Molybdenum disilicide (MoSi2) is a silicon compound of molybdenum. Because the radii of the two atoms are not much different and the electronegativity is relatively close, it has properties similar to that of metals and ceramics. The melting point is as high as 2030 ℃, and it is conductive. Under high temperature, a silicon dioxide passivation layer can be formed on the surface to prevent further oxidation. Its appearance is gray metal color, originating from its four sides α- A-type crystal structure, hexagonal but unstable β- Modified crystal structure. Insoluble in most acids, but soluble in nitric acid and hydrofluoric acid.

Physical Properties of Moly Disilicide Heating Elements

Max temperatures of Moly Disilicide Heating Elements in Different Atmospheres

Advantages of molybdenum disilicide electric heating element:

In the process of use, the silicon molybdenum rod has the effects of low thermal conductivity, high temperature resistance, high energy saving rate and green environmental protection.

1. Low thermal conductivity: the thermal conductivity of silicon molybdenum rod electric heating element shall not be higher than 0.06w/m. K. The thermal conductivity of silicon molybdenum rod is only 0.03w/m. K, which is ten times lower than that of traditional high-temperature materials,

2. The inhibition efficiency of thermal insulation can reach about 90%.

3. High temperature resistance: the high temperature resistance of silicon molybdenum rod can reach 1800 ℃, far exceeding other heat-resistant materials.

4. High energy saving rate: the silicon molybdenum rod has a long service life, which is more than 30% more than the efficiency of traditional coal combustion, and its service life is also unmatched by coal.

5. Green and environmental protection: compared with the use of coal, the silicon molybdenum rod electric heating element is used and adjusted with the control cabinet, without any volatile gas and sundries. Silicon molybdenum rod is made of pure inorganic materials, non-toxic and harmless, and has no volatilization at high temperature and normal temperature.