Molybdenum News Center

Molybdenum and Electrical Industry

Molybdenum has good electrical conductivity and high temperature properties, especially thermal expansion coefficient of the glass very similar , widely used in the manufacture of the lamp filament coil core wire , lead , hooks , brackets , side rods and other components , to make the gate in the electron tube and anode support material . Molybdenum used in VLSI gate metal oxide semiconductor , the integrated circuit is mounted on the molybdenum can eliminate the " bi-metal effect ." Ultra-thin seamless molybdenum tube ( approximately 15μm) can be used as high-definition TV picture tube anode holder , this TV image scan lines of 1125 , compared to a normal TV increased by 2 times . Molybdenum wafer but also for the power transistor heat shield and silicon rectifier substrate and heat sink .

In the modern electronics industry , in addition to use of pure molybdenum outside , Mo-Re alloy tube can be used for structural materials and special lamp , Mo-50Re and TZM alloy tube can be used for high power microwave and millimeter-wave tube in a thermionic cathode structure member , its working temperature can reach 1200 ℃, current density of up to 10 amps / cm 2 . As a pure molybdenum wire lead the recrystallization temperature is low , the embrittlement occurs under high temperature , of life in recent years , was developed to add Si, k , and C and other elements to increase the recrystallization temperature , producing a " high molybdenum wire . " Take a look at the production process of adding rare earth elements molybdenum oxide of yttrium , cerium, lanthanum , more effectively improve the recrystallization temperature , to overcome the material at high temperature embrittlement . Containing 0.1-0.3% zirconium, 0.1% scandium molybdenum wire , nitriding treatment at 1200 ℃ , the scandium alloy dispersed throughout the go, this molybdenum wire tensile strength at 20 ℃ up to 1,400 megapascals .

Mold industry is developing rapidly, so EDM technology to be universally applied , molybdenum wire is ideal for WEDM wire electrode can cut all kinds of steel and carbide , an extremely complex parts machining shape , and its discharge machining stable and can effectively improve the precision of the mold .

These are the two most widely molybdenum wire uses, bulb manufacturing industry and the rise of manufacturing molds , making the production and consumption of molybdenum wire by leaps and bounds . According to the China Lighting Association statistics, in 2001 the national production of molybdenum Sida to 3.15 billion meters , the actual production is estimated to reach 40 million meters, consuming nearly 800 tons molybdenum, their number is very considerable. Which wire cutting molybdenum wire production over two billion meters , accounting for more than half of the total molybdenum wire , its market prospects are very encouraging.

 Tungsten - copper alloy widely used false EDM cutting tool electrode , however, research in recent years to replace tungsten molybdenum as an electrode , the results show that tungsten and molybdenum -based electrode with copper (≤ 50% by weight ) and change the content of the corrosion resistance is not the same. Mechanical load of the heating pulse and the presence of a pulse , this embrittlement process mainly depends on the corrosion resistance , molybdenum extension - brittle transition temperature lower than tungsten , so that brittleness , strong corrosion resistance . Molybdenum - copper, molybdenum - silver alloy false seizing resistance and good electrical conductivity, can be used as air switch, pressure switch and contactor contacts. Mo - Cu composite continuous copper film on the body carry a lot of discrete particles of molybdenum , homogeneous microstructure , wear thick with good thermal and electrical conductivity , can be used for the metal core of the multilayer circuit board .

Recently, also developed a molybdenum trioxide can change color , the material in bright light will change color , and can be easily restored , can be used for computer optical storage devices and multiple use of the copy material .

More molybdenum product: http://www.molybdenum.com.cn
Tel: 0592-5129696 Fax：0592-5129797
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Tungsten News & Tungsten Price: http://www.chinatungsten.com


 

• < Prev
• Next >