Diamond-metal compound type clamping rod for travelling wave tube and manufacture method of diamond-metal compound type clamping rod
A diamond and clamping rod technology, applied in the field of diamond-metal composite clamping rod components and their manufacturing, can solve the problems of low clamping rod strength, difficult assembly, high cost, shortened time, increased strength, and increased output. The effect of power increase
Inactive Publication Date: 2013-01-09
NO 12 RES INST OF CETC
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Problems solved by technology
[0005] The technical problem to be solved in the present invention is that the clamping rod using synthetic diamond as the helical traveling wave tube will have disadvantages such as high cost, low strength of the clamping rod, and difficult assembly. In order to overcome these deficiencies, it is necessary to design And manufacture a diamond-metal material composite clamping rod for traveling wave tubes, which can effectively improve the heat dissipation efficiency of traveling wave tubes, especially the helical wires of millimeter wave and short millimeter wave traveling wave tubes, thereby improving the efficiency of traveling wave tubes output power and efficiency
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[0012] refer to figure 1 , represents a schematic diagram of a rectangular cross-section diamond-metal composite clamping rod. In the figure, 1 is a polished diamond whose surface is close to the clamped helix, and 2 is a molybdenum metal substrate. As a practical application example for a traveling wave tube, the length of the diamond-metal composite clamping rod is 52mm, the height is 0.7mm, the width is 0.2mm, and the thickness of the diamond is 0.2mm; Mo is used as the metal substrate.
[0013] refer to figure 2 , represents a schematic diagram of a metal substrate for growing diamond. In the figure, 1 is a diamond, and 2 is a molybdenum substrate with a thickness of 0.5 mm and a diameter of 60 mm. The surface of the molybdenum substrate is first mechanically polished and nucleated with diamond powder, and then diamonds are grown by microwave plasma chemical vapor deposition. figure 1 The diamond-metal composite clamping rod shown.
[0014] refer to image 3 , repre...
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Abstract
The invention discloses a diamond-metal compound type clamping rod for a travelling wave tube and a manufacture method of the diamond-metal compound type clamping rod, belonging to the technical field of vacuum electronics. The diamond-metal compound type clamping rod is used as one part in a travelling wave tube and high-frequency structure and comprises an artificially synthesized diamond and a metal substrate. The manufacture method of the diamond-metal compound type clamping rod comprises the following steps of: firstly forming a diamond crystal nucleus on the surface of the metal substrate, then artificially synthesizing a diamond layer by using a chemical vapor deposition method, then grinding and polishing the surface of the diamond, and cutting and processing into the diamond-metal compound type clamping rod by using laser. The diamond-metal compound type clamping rod has the advantages of greatly shortening the growing time of diamond, reducing the cost, improving the strength of the clamping rod, and remarkably improving the output power of the travelling wave tube compared with that when a beryllium oxide clamping rod is used.
Description
technical field [0001] The invention belongs to the technical field of vacuum electronics, and in particular relates to a diamond-metal composite clamping rod component for traveling wave tubes and a manufacturing method thereof. Background technique [0002] Traveling wave tubes are widely used in satellite communication, navigation and positioning, radar detection and other fields. The clamping clamping rod is an indispensable part in the helical TWT, and has always been a key component affecting the performance of the device. For many traveling wave tubes, especially broadband traveling wave tubes, the most important factor limiting their power output capability is the heat dissipation capacity of the high frequency slow wave system, that is, the heat dissipation capacity of the helical clamping rod. The working temperature of the helix in the output section determines the working performance, life and reliability of the traveling wave tube. As the frequency increases, ...
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IPC IPC(8): H01J23/12H01J9/24
Inventor 丁明清陈波冯进军
Owner NO 12 RES INST OF CETC
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