Molybdenum disilicide (MoSi2), a refractory metal silicide, is mainly used as a heating element. Of late, it has been recognized as a potential structural ceramic, since it exhibits high elastic modulus and exceptional oxidation resistance at very high temperatures.
MoSi2 and related composites are usually prepared through pressure-assisted sintering methods. Hot isostatic pressing creates intricate shapes, with even density and grain structures. However, this process is more expensive.
Key Properties
MoSi2 has gained a lot of interest because of its attractive properties:
High melting pointModerate densityHigh modulus at higher temperaturesExceptional oxidation resistance
Applications
Commercially, MoSi2 is widely used in electric heating elements. The material can be potentially applied in high-temperature structural parts.
Max temperatures of MoSi2 Heating Element in Different Atmospheres
| Atmosphere | Max. element temperature | |
| MS1700 | MS1800 | |
| Air | 1700℃ | 1800℃ |
| Nitrogen | 1600℃ | 1700℃ |
| Argon, Helium | 1600℃ | 1700℃ |
| Hydrogen | 1100-1450℃ | 1100-1450℃ |
| N2/H2 95/5% | 1250-1600℃ | 1250-1600℃ |
| Applications | Heat treatment Forging Sintering Glass melting Refining Radiant tubes | Laboratory furnaces Testing equipment High temperature sintering production furnaces |
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