Tungsten Rhenium Wire

Tungsten rhenium wire is used for heating elements in high temperature furnaces, thermocouples and in electronics. Its advantage is its ability to maintain greater ductility compared to tungsten after exposure to extremely high temperatures.Tungsten wire has fiber structure, when the temperature reaches 1500-1600 ℃, the tungsten filament would turn, and cause high-temperature sag. To improve the quality of tungsten wire, it is always mixed some additives during sintering procession, such as Na2O, K2O, SiO2, ThO to enhance the capacity of high-temperature creep resistance and high temperature anti-sag of tungsten wire. In order to improve the tenacity of tungsten wire and prevent the deformation under high temperature, it usually added some oxides, such as silica, alumina, potassium and so on.

Tungsten rhenium wire is the most common material used to produce heaters for dispenser cathodes. Performance variation may be attributable to a range of factors, including cold work and rhenium content variation.

Tungsten Rhenium Wire-3RW:

Tungsten rhenium wire-3RW is widely applied in lamps, electronic tubes, and other devices production which requires the characteristic of good ductile.  Tungsten rhenium wire-3RW owns great features of elongation and resistance to shock and vibration.

Why mix rhenium into tungsten?

Rhenium significantly reduces the brittle characteristics of tungsten at room temperature. What is more, the addition of rhenium increases the recrystallization temperature, the ductility, and the ultimate tensile strength of these alloys and decreases the ductile-brittle transition temperatures of tungsten-rhenium alloys.

Once tungsten wire used at high temperature after recrystallization, it becomes quite fragile. And it can be easily broken under the condition of shaking and vibrating. In some electric light source products require high reliability, in order to prevent fragmentation of lamp filament, tungsten wire often doped 3 to 5% rhenium, known as the tungsten rhenium wire which can make the extension of tungsten-brittle transition temperature decreased to room temperature or below room temperature.

We supply tungsten rhenium wire doped with rhenium, which has much better ductility and stability than pure tungsten in high temperature.

Application of Tungsten Rhenium Wire:

1.Production of specific lighting filaments, thermo-sensitive elements for chromatograph

2.For making heater and grid wire for TV tube and image-pick up tube

3.For millitary electronic devices

More info>>

1.Tungsten wire

2.Introduction to rhenium

3.Why mix rhenium in tungsten wire

4.Catalog of Tungsten Wire

5Applications of tungsten rhenium wire

6.Quotation table of tungsten wire