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Refractory Metal Alloys: Analysis of Characteristics and Applications of Tungsten-Molybdenum Alloys
In modern electronic device manufacturing, refractory metal alloys play a vital role, particularly in components requiring superior performance under high-temperature conditions. Tungsten-molybdenum alloy (W-Mo alloy), with its outstanding high-temperature stability and excellent electrical resistance properties, is widely used in high-temperature electronic devices such as vacuum tubes.
Preparation and Types of Tungsten-Molybdenum Alloys
Tungsten-molybdenum alloys are produced by mixing tungsten and molybdenum powders in specific proportions, pressing them into rods, and then sintering. The sintered alloy rods undergo forging before being drawn into wires with diameters ranging from 50 to 280 micrometers, widely used in high-temperature electronic components.
Currently, the market primarily offers two common types of tungsten-molybdenum alloys:
MB50 Alloy: Contains 50% tungsten and 50% molybdenum, exhibiting high tolerance at elevated temperatures.
MB20 Alloy: Contains 80% molybdenum and 20% tungsten, featuring a higher resistivity suitable for specialized applications.
Refractory metal alloys play a vital role in modern electronic device manufacturing, particularly in components requiring superior performance under high-temperature conditions. Tungsten-molybdenum alloy (W-Mo alloy), with its outstanding high-temperature stability and excellent electrical resistance properties, is widely used in high-temperature electronic components such as vacuum tubes.
Preparation and Types of Tungsten-Molybdenum Alloys
Tungsten-molybdenum alloys are produced by mixing tungsten and molybdenum powders in specific ratios, pressing them into rods, and then sintering. The sintered alloy rods undergo forging before being drawn into wires with diameters ranging from 50 to 280 micrometers, widely used in high-temperature electronic components.
Application Fields of Tungsten-Molybdenum Alloy
One of the primary applications of tungsten-molybdenum alloy is as the cathode filament in vacuum tubes. These tubes must withstand high temperatures during operation, making the alloy's thermal stability and high resistivity ideal for this purpose. Additionally, the alloy is frequently used in other high-temperature electronic components, such as electric light sources and vacuum tubes.
However, despite its excellent high-temperature performance and electrical resistance, tungsten-molybdenum alloy exhibits lower hardness and wear resistance compared to pure tungsten alloys. Consequently, it may perform less favorably than tungsten alloys in applications demanding extreme hardness and wear resistance.
Summary
As a high-temperature refractory alloy, tungsten-molybdenum alloy plays a critical role in high-temperature electronic components due to its high melting point, electrical resistivity, and elongation. Not only do they maintain stable electrical properties in high-temperature environments, but they also allow for plastic deformation within certain ranges, making them common materials in electronic components, particularly vacuum tubes. #TungstenMolybdenumAlloy
#RefractoryMetals
#VacuumTubes
#HighTemperatureMaterials
#ResistivityCharacteristics
#ElectronicComponents
#HighTemperatureStability
#AlloyMaterials
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