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Material volatility test device in ultra-high vacuum thermal environment

A characteristic testing, ultra-high vacuum technology, applied in the direction of removing certain components and weighing, etc., to achieve the effects of pollution protection, ensuring heating uniformity, and reducing interference

Inactive Publication Date: 2017-01-18
BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the volatilization characteristics of materials in a thermal vacuum environment are important assessment indicators for space structure materials, but there is no test device that can accurately measure the volatilization characteristics of materials in an ultra-high vacuum thermal environment.

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  • Material volatility test device in ultra-high vacuum thermal environment
  • Material volatility test device in ultra-high vacuum thermal environment

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Embodiment Construction

[0020] The following introduces the specific implementation mode as the content of the present invention, and the content of the present invention will be further clarified through the specific implementation mode below. Of course, the following specific embodiments are described only to illustrate different aspects of the present invention, and should not be construed as limiting the scope of the present invention.

[0021] figure 1 It is a system schematic diagram of the ultra-high vacuum material volatile characteristic testing device. The testing device includes: a test container 1, a vacuum pumping system 2, a heating and temperature control test platform 3, a water-cooled temperature control collection platform 4, and a measurement and control system 5. The test container 1 is a horizontal cylindrical structure of Ф200mm×280mm, made of stainless steel, the surface is polished, and the interface of the test container is sealed with a metal gasket. The test container is e...

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Abstract

The invention discloses a device for testing the volatizing property of a material at an ultrahigh vacuum thermal environment. The device comprises a testing container, a vacuum pumping system, a heating temperature-control testing platform, a water-cooling temperature-control collecting platform and a measurement and control system, wherein a loading flange connector of the testing container is connected with the heating temperature-control testing platform and the water-cooling temperature control collecting platform which are placed in an up-down combined manner; the heating temperature-control testing platform is used for loading sample materials, and comprises an oxygen-free copper heating platform, five sample box testing stations are respectively arranged on the heating platform, and the bottom of the heating platform is supported on the water-cooling temperature-control collecting platform by virtue of heat insulating ceramics and an isolating plate; a sample receiving plate is arranged on the collecting platform; separators are soldered inside the water-cooling temperature-control collecting platform, circulating water pipelines are arranged in the water-cooling temperature-control collecting platform; the cooling temperature is measured by a thermocoupler; the cooling temperature which is 25+ / -1 DEG C is stably controlled by the collecting platform by controlling the water temperature by a cold water circulating machine.

Description

technical field [0001] The invention belongs to the technical field of vacuum material testing, and in particular relates to a device for testing the volatilization characteristics of materials in ultra-high vacuum and thermal environments. Background technique [0002] Under the thermal vacuum environment, the material will volatilize and outgas due to desorption, so the thermal vacuum volatilization characteristics of the material are used to evaluate the performance of the vacuum material. Especially for materials used in the space environment, the phenomenon of total mass loss (TML) usually occurs due to evaporation, sublimation, and outgassing in the space environment. Among them, some of the damaged materials may recondense on cooler surfaces and may contaminate the sensitive surfaces of the spacecraft. These recondensed substances are called "condensable volatile matter" (VCM). Usually, the condensables produced by mass damage have a particularly serious impact on th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N5/04
Inventor 王军伟张磊李强付春雨韩潇张燚刘高同
Owner BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
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