By comparing the results of the ground simulation test, Researcher Liu Weimin, director of the Lanzhou Institute of Chemistry, Chinese Academy of Sciences, and director of the State Key Laboratory of Solid Lubrication said that after the space experiment, visual observation has revealed that two types of products have changed greatly. The first type is silver and The film material of silver alloy, after being irradiated with atomic oxygen and ultraviolet light, the surface becomes flowered or darkened; the other is molybdenum disulfide lubricating film product, the surface becomes rougher.
The "Shenzhou VII Spaceship Application System Solid Lubricant Space Test" project was undertaken by the Lanzhou Chemicals of the Chinese Academy of Sciences. The real space environment exposure test ended successfully. They plan to complete the preliminary analysis of the space test samples within the next three months, and within six months Complete test and analysis work, and form a work summary report.
Researcher Liu Weimin said that in the next six months, their key work will be to analyze the effects of space environment flight tests and ground simulated space environment tests on lubricating materials; compare and correlate the results of real space environment tests with ground simulated space environment tests , And will pay special attention to the difference of impact effects and establish models of impact effects.
"We need to understand what happens to the lubricating materials in vacuum, atomic oxygen, low temperature and other environments." Liu Weimin said, "We hope to find scientific, reasonable and accurate experimental parameters through experiments, establish relevant experimental specifications, and finally pass ground simulations Device, you can know what will happen in space. "
Xue Qunji, an academician of the Chinese Academy of Engineering and a famous expert in special lubricating materials, believes that the space environment is eroded or corroded by a variety of materials. At the same time, after a positive and negative temperature change of more than 100 degrees, no matter the material structure or performance will be significant Changes, we need to master these data, which is a major research deployment for the development of longer life, more reliable and stable special lubrication materials, and an important technical support for China's future aerospace career
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