W-Re alloy is an alloy composed of tungsten and rhenium. One type is low rhenium alloy, which contains less than 5% rhenium. The other is the perrhenium alloy, which contains 20% ~ 30% rhenium. Rhenium is also a rare metal, less resources, the price is more expensive, if not necessary, should try to use no or less rhenium tungsten alloy.
Molybdenum alloys with 2% ~ 5% rhenium as the base. Rhenium can improve the plasticity and strength of molybdenum by adding molybdenum, which is a solid solution strengthened alloy. With 35% rhenium in molybdenum, the rolling deformation can reach 90% at room temperature. The tensile strength, ductility and resistivity of molybdenum - rhenium alloy increased with the increase of rhenium content. Mo-5%Re and Mo-41%Re are usually used as thermocouple wires for structural materials in aerospace. Mo-50%Re is used as high temperature structural material.
Tungsten-rhenium alloy and molybdenum-rhenium alloy made by adding proper amount of Rhenium into tungsten and molybdenum thermocouple wire not only have good plasticity and can be processed into various structural materials, but also have the characteristics of high hardness, high strength and high temperature resistance. Molybdenum rhenium alloy is often used in the manufacture of high-speed rotating X-ray tube targets, long life grid plates for microwave communication, space reactor core heating tubes, high temperature furnace heating elements and high temperature thermocouples, etc. Tungsten rhenium alloy is widely used in high temperature technology, electric vacuum industry, light bulb industry, atomic energy industry, analytical technology, medical treatment and chemical industry and other fields, often used in the manufacture of special electronic tubes and color picture tube filament, high temperature components, thermocouple, etc.
