Molybdenum disilicide (MoSi2) is a high-temperature structural material with excellent oxidation resistance, heat resistance and good electrothermal conductivity.
Properties of molybdenum disilicide:
1. High melting point: Molybdenum disilicide has a high melting point of 2030°C, which allows it to remain stable at extremely high temperatures.
2. Good oxidation resistance: At high temperatures, a stable silica oxide protective film can be formed on the surface of molybdenum disilicide, which can effectively prevent further oxidation.
3. High strength: In a high temperature environment, molybdenum disilicide can still maintain high strength and hardness.
4. Electrical and thermal properties: molybdenum disilicide has good electrical conductivity and thermal conductivity, and can be used as a heating element.
5. Corrosion resistance: It has good resistance to most acids and bases.
Due to its unique physical and chemical properties, molybdenum disilicide has a wide range of applications in many fields. Here are some of the main uses:
1. High temperature heating element: Due to the high melting point and good electrothermal conductivity of molybdenum disilicide, it is used as a heating element in furnaces, such as melting furnaces, sintering furnaces, heat treatment furnaces, etc.
2. Thermal shielding and thermal barrier materials: In gas turbines and jet engines, molybdenum disilicide is used to make thermal shielding and thermal barrier materials to protect other structural materials from high temperatures.
3. Anti-oxidation coating: Molybdenum disilicide can be used to make anti-oxidation coatings to protect metals and alloys from oxidation at high temperatures.
4. Semiconductor industry: In the semiconductor industry, molybdenum disilicide is used in heaters for the manufacture of silicon wafers and as a component in chemical vapor deposition and physical vapor deposition processes.
5. Aerospace: In the aerospace sector, molybdenum disilicide is used in the manufacture of high-temperature structural parts and thermal protection systems.
6. Automotive industry: In automobile exhaust gas treatment systems, molybdenum disilicide can be used as a catalyst carrier for purifying exhaust gases.
7. Metal smelting and glass manufacturing: In the metal smelting and glass manufacturing industry, molybdenum disilicide is used to make the lining of furnaces and furnaces to improve the service life and operating temperature of furnaces.
8. Nuclear energy industry: In the nuclear energy industry, molybdenum disilicide is used in certain components of nuclear reactors due to its resistance to radiation and high temperatures.
9. Chemical industry: In the chemical industry, molybdenum disilicide is used to make corrosion-resistant pipes, valves, and heat exchangers, among others.
10. Electronic devices: Molybdenum disilicide can also be used to make high-temperature electronic devices and circuits.