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Double-layer electrode for multi-level depressed collector and preparation process thereof

A double-layer electrode, preparation process technology, applied in electrode system manufacturing, cold cathode manufacturing, discharge tube/lamp manufacturing, etc., can solve problems such as the inability to effectively ensure the gas-tight connection of pyrolytic graphite and hinder the widespread use of pyrolytic graphite. , to achieve high firmness, increase thermal conductivity, and inhibit secondary electron emission.

Inactive Publication Date: 2010-06-23
INST OF ELECTRONICS CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

However, due to the technical gap at home and abroad, domestic counterparts are hindered from widely using pyrolytic graphite or high-density isotropic graphite in multi-stage step-down collectors.
This is because the domestic sealing technology cannot effectively guarantee the hermetic sealing of pyrolytic graphite or high-density isotropic graphite with ceramics or other metals.

Method used

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  • Double-layer electrode for multi-level depressed collector and preparation process thereof
  • Double-layer electrode for multi-level depressed collector and preparation process thereof
  • Double-layer electrode for multi-level depressed collector and preparation process thereof

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Embodiment Construction

[0048] The multi-stage step-down collector is a key component of various traveling wave tubes and some klystrons. Its function is to recover the remaining kinetic energy in the electron beam after beam-wave interaction, thereby greatly improving the overall efficiency of the device.

[0049] Such as figure 1 As shown, it is a multi-stage step-down collector double-layer electrode of the present invention, including a metal layer 1 and a graphite layer 2, and the opposite surfaces of the two layers are tightly bonded. The material of the metal layer 1 can be oxygen-free copper or other metals. The material of the graphite layer 2 is pyrolytic graphite or high-density isotropic graphite.

[0050] The multi-stage step-down collector double-layer electrode of the present invention is a double-layer electrode that combines pyrolytic graphite or high-density isotropic graphite layer 2 with other metal layers 1, and can utilize the electrode outer layer metal layer 1 to ensure the c...

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Abstract

The invention discloses a double-layer electrode for a multi-level depressed collector and a preparation method thereof, and relates to vacuum device technology. The double-layer electrode comprises a metal layer and a graphite layer; opposite surfaces of the two layers are fixedly connected tightly; and the material of the graphite layer is pyrolytic graphite or high-density isotropic graphite. The electrode can ensure air-tight seal with ceramics and other metals by utilizing the outer-layer electrode; and the inner-layer pyrolytic graphite or high-density isotropic graphite has low secondary electron yield so as to facilitate improving the efficiency of the multi-level depressed collector. The preparation process adopts coating and sintering technology, and is simple and firm.

Description

technical field [0001] The invention relates to the technical field of vacuum devices, and relates to a multi-stage step-down collector double-layer electrode and a preparation process. Background technique [0002] Traveling wave tube is one of the important members of the family of microwave electric vacuum devices, and has a wide range of applications in the fields of electronic countermeasures, electronic warfare, radar, meteorological observation, space measurement and satellite communication. Generally speaking, various applications have different requirements for devices such as traveling wave tubes. However, in general, higher power and higher efficiency are common trends in various applications. Especially for space traveling wave tubes for space measurement and satellite communication, due to the limited energy supply, improving the efficiency of traveling wave tubes has become the first concern in the development and production of traveling wave tubes. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J23/027H01J9/02
Inventor 赵建东吕京京
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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