Volume 40 Issue 5
Sep.  2020
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ZHANG Xingwang, YIN Zhigang, YU Jianding, YUAN Zhangfu, ZHAO Jiuzhou, LUO Xinghong, PAN Mingxiang. Space Materials Science in China: I. Experiment Studies under Microgravity[J]. Chinese Journal of Space Science, 2020, 40(5): 946-949. doi: 10.11728/cjss2020.05.946
Citation: ZHANG Xingwang, YIN Zhigang, YU Jianding, YUAN Zhangfu, ZHAO Jiuzhou, LUO Xinghong, PAN Mingxiang. Space Materials Science in China: I. Experiment Studies under Microgravity[J]. Chinese Journal of Space Science, 2020, 40(5): 946-949. doi: 10.11728/cjss2020.05.946

Space Materials Science in China: I. Experiment Studies under Microgravity

doi: 10.11728/cjss2020.05.946 cstr: 32142.14.cjss2020.05.946
Funds:

Supports by the National Natural Science Foundation of China (U1738114), the Strategic Priority Research Program on Space Science, the Chinese Academy of Sciences (XDA15051200), the China's Manned Space Station Project (TGJZ800-2-RW024), and the Chinese manned space flight pre-research project (030302)

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  • Author Bio:

    ZHANG Xingwang,E-mail:xwzhang@semi.ac.cn;PAN Mingxiang,E-mail:panmx@iphy.ac.cn

  • Received Date: 2020-03-26
  • Publish Date: 2020-09-15
  • The virtual absence of gravity-dependent phenomena in microgravity allows an in-depth understanding of fundamental events that are normally obscured and therefore are difficult to study quantitatively on Earth. Of particular interest is that the low-gravity environment aboard space provides a unique platform to synthesize alloys of semiconductors with homogeneous composition distributions, on both the macroscopic and microscopic scales, due to the much reduced buoyancy-driven convection. On the other hand, the easy realization of detached solidification in microgravity suppresses the formation of defects such as dislocations and twins, and thereby the crystallographic perfection is greatly increased. Moreover, the microgravity condition offers the possibilities to elucidate the liquid/solid interfacial structures, as well as clarify the microstructure evolution path of the metal alloys (or composites) during the solidification process. Motivated by these facts, growths of compound semiconductors and metal alloys were carried out under microgravity by using the drop tube, or on the scientific platforms of Tiangong-2 and SJ-10. The following illustrates the main results.

     

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  • [1]
    YUAN Zhangfu, WANG Rongyue, XIE Shanshan, et al. Wettability of high-temperature melts under microgravity and ground gravity conditions[J]. Sci. Sin. Phys. Mech. Astron., 2020, 50:047004
    [2]
    LUO X H, WANG Y Y, LI Y. Role of hydrostatic pressure and wall effect in solidification of TC8 alloy[J]. NPJ Microgravity, 2019, 5:23
    [3]
    LI Wang, JIANG Hongxiang, ZHANG Lili, et al. Solidification of Al-Bi-Sn immiscible alloy under microgravity conditions of space[J]. Scr. Mater., 2019, 162:426-431
    [4]
    YIN Zhigang, ZHANG Xingwang, WU Jinliang. Growth of III-V semiconductor crystals under microgravity[J]. Sci. Sin. Phys. Mech. Astron., 2020, 50:047003
    [5]
    YU J, INATOMI Y, KUMAR V N, et al. Homogeneous InGaSb crystal grown under microgravity using Chinese recovery satellite SJ-10[J]. NPJ Microgravity, 2019, 5(1):8
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