Rhenium and Tungsten-Rhenium Alloy Effect

Rhenium Effect

Often the doped tungsten containing 3 to 5% of rhenium, tungsten rhenium wire is called, it can make an extension of the tungsten-brittle transition temperature drops to or below room temperature. This is a very strange rhenium effect, has not yet found one element can replace rhenium, tungsten produce the same effect.

Tungsten-Rhenium Alloy

Composed of tungsten and rhenium alloys. One for low-rhenium alloy containing less than 5% rhenium; another is a high-rhenium alloys, rhenium is 20% ~ 30%. Its preparation method and tungsten material similar to the main tube and the application of the special color cathode ray tube filament, require high strength and high ductility of the high temperature part, the low-rhenium alloy and a pair of high rhenium alloy can be used to measure the temperature of 1500 ~ 3000 ℃ thermal even. Instead of using the tungsten-rhenium thermocouple platinum-rhodium thermocouple can save precious platinum, rhodium and other metals. Rhenium is also scattered metal, fewer resources, more expensive, if not necessary, should be adopted without rhenium or less plus rhenium tungsten alloy.


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