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ZrAl Zirconium Aluminum Alloy
General term for preparations or devices that effectively absorb certain gas molecules, used to obtain or maintain a vacuum, and to purify gases.
Chinese name: zirconium aluminum alloy powder, zirconium aluminum 16 getter
Don't call it: A degassing agent
Usage: Used to obtain and maintain a vacuum, etc
Should be used: electrical vacuum device production and other disciplines mechanical engineering
The main role
Zirconium aluminum alloy powder is widely used in vacuum electronic devices, which creates a good working environment for the devices, stabilizes the characteristic parameters of the devices, and has an important influence on the performance and service life of the devices:
(1) In a short time to improve the vacuum device vacuum degree (dappa above), in the device after the exhaust sealing off and aging process to eliminate residual and re-released gas, is conducive to shorten the exhaust time;
(2) Maintain a certain vacuum degree during the storage and operation of the device;
(3) Absorption device in the start and abnormal work of the sudden bleed, effectively protect the cathode and other sensitive elements.
Zirconium - aluminum alloy powder is a non - evapotranspiration type getter made of inspiratory materials with high evaporation temperature. This getter does not require evapotranspiration, but must be activated before it has inspiratory properties. Activation means that the getter is properly heated so that it has a strong inspiratory capacity. During activation, the gas emitted by the getter is either evacuated by a vacuum pump or sucked away by the evapotranspiration getter. The activated non-evapotranspiration getter can be aspirated in large quantities at operating temperatures. The non-evapotranspiration getter absorbs the tube gas in the form of surface absorption of the gas and diffusion of the gas into the getter.
Non-evapotranspiration getter commonly used getter materials are: titanium, zirconium, tantalum, thorium and so on, zirconium as the main getter used most. Such as zirconium aluminum 16 getter and so on.
Zirconium aluminum alloy powder technology is economical, simple, effective and durable for obtaining a good vacuum atmosphere inside the tube. It plays an important role in the development and production of electrical vacuum devices with long life, high reliability and excellent performance. It is not only widely used in vacuum electronic devices, such as reception amplifier, power tubes, black and white or color TV picture tube, oscilloscope tube, camera tube, traveling wave tubes, fluorescent lamp and high-pressure discharge lamp, etc., but also the application of light cathode manufacturing, nuclear reactors, controlled nuclear fusion device, gas laser, rare gas purification, high vacuum, etc.