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Molybdenum Silicide is used in many industries, including the glass industry and the steel industry. It is a refractory ceramic with a high melting point and excellent oxidation resistance.
It is important that you handle the material with care. There are many potential hazards associated with this material. If you are exposed to it, you should wash it off immediately and follow all local, state, and federal regulations for disposal.
Molybdenum Silicide is produced in two steps. First, the material is sintered in an inert atmosphere. Second, it is sintered again in air at temperatures between 1000 and 1600 degrees.
Typical molybdenum silicide composition contains 760 pounds of 90 percent ferrosilicon, 259 pounds of aluminum, 160 pounds of lime, and 0.02-0.05% of Al2O3. A variety of additives may be added, including calcium bentonite. This can be done in concentrations ranging from 2 to 6 weight percent.
High-temperature applications for molybdenum disilicide include high-emissivity coatings, heat shields, and thermonuclear fusion. In addition, it can be used for advanced composite materials.
Molybdenum silicide has good chemical corrosion resistance and stress-rupture strength. However, it is not ductile at high temperature. Because of this, it has poor high-temperature strength. When it is exposed to air, it will start oxidizing. The oxidation process will disturb the formation of a continuous silicon dioxide layer. That can lead to a lower operating temperature.
It has low electrical resistance and is suitable for microelectronic applications. Although it is not used in aerospace, it is a promising candidate for structural applications.