Molybdenum Disilicide Heating Element For Sintering Furnace

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 point
• Moderate density
• High modulus at higher temperatures
• Exceptional oxidation resistance

Common properties of hot-pressed MoSi2 are illustrated in Table 1.

Table 1. Typical physical and mechanical properties of molybdenum disilicide

Applications

Commercially, MoSi2 is widely used in electric heating elements. The material can be potentially applied in high-temperature structural parts.

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