W-Re alloy is an alloy of tungsten and rhenium. A type of low rhenium alloy with rhenium under 5%; The other type is high rhenium alloy, with rhenium of 20% ~ 30%. Rhenium is also a rare metal, with less resources and more expensive. If it is not necessary, it should try to use tungsten alloy with no rhenium or less rhenium.
Molybdenum alloy was added with molybdenum to 2% ~ 5%. Rhenium added molybdenum can improve the plasticity of molybdenum and increase the strength of molybdenum. In molybdenum, 35% rhenium was added, and at room temperature, the deformation amount could reach 90%. The tensile strength, ductility and resistivity of molybdenum alloy were increased with rhenium content. It is usually used as a thermocouple wire with Mo-5%Re and Mo-41%Re as the structural material in aerospace. Mo-50%Re for high temperature structural material.
In adding the right amount of tungsten and molybdenum rhenium tungsten and molybdenum rhenium alloy made of rhenium alloy, not only has good plasticity, can be processed into a variety of structural material, but also has high hardness, high strength and high temperature resistance and other properties. Molybdenum rhenium alloy is often used in the manufacture of high speed rotating X-ray tubes, long life grid of microwave communication, space reactor core heating tube, high temperature furnace heating body and high temperature thermocouple. Rhenium tungsten alloy has been widely applied to high temperature technology, electric vacuum industry, the light bulb, atomic energy industry, analysis technology, medical and chemical industry and other fields, often used in the manufacture of special valve and color picture tube filament, high temperature parts, thermocouple, etc.
Rhenium can increase the creep strength of nickel-high-temperature alloys, which can be used in the combustion chamber of jet engines, turbine blades and exhaust nozzles. Rhenium nickel alloy is the core material of modern jet engine blades, turbine disk and other important structural parts. The use of rhenium can improve the properties of nickel-base high-temperature alloy. It can also be used to make alloy for single crystal blades. Both of these effects can make turbines, especially high-pressure turbines, work at higher temperatures. In this way, the designer can increase the pressure of the turbine and improve the operation efficiency. Or the engine can speed up the burning of fuel, which in turn produces more thrust. In addition, the operating temperature can be maintained at a lower level, and the difference between the actual operating temperature and the maximum allowable temperature of the turbine can be extended so that the service life can be extended. People can also take into account both aspects and improve the performance and durability of the engine.
Rhenium and tungsten, molybdenum or platinum metals are made of alloy or coating materials, which are widely used in electronics and aerospace industry due to their high melting point, high resistance, strong magnetism and good stability. Such as manufacturing of special incandescent light bulb shell of filament, artificial satellites and rockets, atomic reactor protection board, used as ultra high temperature heater evaporation metal, used for high temperature coating used on the rockets and missiles, spacecraft instruments and high temperature parts such as heat shield, arc discharge, electrical contactor and so on all is the use of the above characteristics of rhenium.
