Why Can Molybdenum be applied for Electronic Industry?

Molybdenum has good conductivity and high-temperature performance, in particular, the thermal expansion coefficient of which is very similar to that of glass. Molybdenum is widely used in the manufacture of spiral filament wires, lead wires, hooks, supports, side bars and other components in the bulb. It is used as a grid and anode supporting material in the tube. In the ultra large integrated circuit, molybdenum is used as a metal oxide semiconductor gate, and the "bimetallic effect" can be eliminated by installing the integrated circuit in molybdenum. The ultra thin seamless molybdenum tube (about 15 μm) can be used as an anode holder for high definition television tube, this type of television has an image scan line of 1125, which is twice as big as the average TV set. The molybdenum wafer can also be used as the substrate and heat sink of the power transistor thermal shield and silicon rectifier.

In the modern electronics industry, Mo-Re alloys can be used as structural materials for vacuum tubes and special bulbs in addition to pure molybdenum. Mo-Re alloys and TZM alloy can also be used for high power microwave thermionic cathode structure of pipe and millimeter wave components, the working temperature of which can reach 1200 ℃ and the current density can be up to 10 amp/cm2.

The temperature of pure molybdenum filament is low, and it can be brittle at high temperature and affect the service life. In recent years, some elements have been developed to add Si, k and C to improve the crystallization temperature and produce "high-temperature molybdenum wire". By adding the rare earth element yttrium, cerium and lanthanum in the process of molybdenum oxide production, it can effectively improve the crystal temperature and overcome the brittleness of the material.

The rapid development of mold industry makes the technology of EDM technology widely used. Molybdenum wire is an ideal electrode wire for EDM, which can be used to cut all kinds of steel and hard alloy, and the stability of discharge machining can effectively improve the precision of the mold.

These are the two most extensive uses of molybdenum wire. The development of the light bulb manufacturing industry and the rise of the mold manufacturing industry have made the production and consumption of molybdenum wire advance rapidly. Recently, a discoloration of molybdenum trioxide has been developed. This material will change color under bright light and can be easily restored. It can be used for electronic computer optical storage device and multiple photocopying materials.

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