Because the molybdenum has the advantages of high melting point, low thermal expansion coefficient and lower secondary electron emission and so on, it is widely used for various electronic tube grid, anode and advanced electric light source power lead wire. Now the study believes that adding a small amount of silicon and potassium to molybdenum can make the crystallization temperature be 700 degrees Celsius higher than pure molybdenum, to reach up 1900 - 1800 degrees, which is widely used as a heating element, heat insulation screen and so on.
The application of molybdenum is wider in the processing industry. Under high temperature and the heat mechanical alternating stress. the material fatigue crack is caused. And the use of molybdenum or molybdenum base alloy with small thermal expansion coefficient, strong thermal conductivity, high temperature strength, the service life of grinding tool is greatly extended. Abroad, the molybdenum annual consumption amount as the car piston ring, cylinder wall has reached more than 600 tons. Molybdenum has the high reflectivity to laser, so it is not easy to be damaged by the laser, the United States is using it to develop a laser mirror with diameter of 3.5m, thickness of 13mm. Molybdenum is a good spraying material, which can greatly improve the corrosion resistance of the sprayed parts, and extend the life of the parts.
