Storage of The Microwave Window of Space Traveling Wave Tubes

Guojian WANG; Li ZHAO; Yuxin LU; Hong TIAN; Wenqi SHI

doi:10.11999/JEIT200103

Volume 43 Issue 5

May 2021

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Guojian WANG, Li ZHAO, Yuxin LU, Hong TIAN, Wenqi SHI. Storage of The Microwave Window of Space Traveling Wave Tubes[J]. Journal of Electronics & Information Technology, 2021, 43(5): 1480-1484. doi: 10.11999/JEIT200103

Citation:

Guojian WANG, Li ZHAO, Yuxin LU, Hong TIAN, Wenqi SHI. Storage of The Microwave Window of Space Traveling Wave Tubes[J]. Journal of Electronics & Information Technology, 2021, 43(5): 1480-1484. doi: 10.11999/JEIT200103

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Storage of The Microwave Window of Space Traveling Wave Tubes

doi: 10.11999/JEIT200103 cstr: 32379.14.JEIT200103

1.
Aerospace Information Research Institute, Chinese Academy of Science, Beijing 100190, China
2.
CASIC Space Eengineering Development Co., Beijing 100854, China
3.
Tianjin Traffic Vocational Institute, Tianjin 300110, China

Funds: The National Natural Science Foundation of China (61771454)

Received Date: 2019-02-12
Rev Recd Date: 2020-10-29

Available Online: 2020-12-14

Publish Date: 2021-05-18

Abstract

Abstract

The microwave window is the main component of the space traveling wave tube and an important transmission component for transmitting high-frequency electromagnetic waves in the tube. The microwave window is generally welded with silver solder, and stored in a vacuum cabinet. After storage for some time, the microwave window surface becomes black. The analysis shows that the rubber products placed in the vacuum cabinet cause vulcanization of the silver soldered joints of the high-frequency components, leading to storage failure. Combining experimental results and theoretical analysis, the sulfur in the rubber is relatively stable under atmospheric conditions. However, in a vacuum state, sulfur is relatively easy to sublimate from the rubber into the vacuum cabinet, which will diffuse a large amount of sulfur vapor in the vacuum cabinet. These sulfur vapors react with the silver solder to form Ag₂S, so the sulfur-containing rubber should not be placed in a vacuum cabinet.
- Space traveling wave tubes,
- Microwave window,
- Storage failure

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References(16)

References

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