Comprehensive understanding on collision-induced material degradation phenomenon under inactive heavy atom in sub low earth orbit environment
Project/Area Number |
25289307
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Partial Multi-year Fund |
Section | 一般 |
Research Field |
Aerospace engineering
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Research Institution | Kobe University |
Principal Investigator |
YOKOTA KUMIKO 神戸大学, 工学研究科, 助手 (20252794)
|
Co-Investigator(Kenkyū-buntansha) |
田川 雅人 神戸大学, 工学研究科, 准教授 (10216806)
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Co-Investigator(Renkei-kenkyūsha) |
TERAOKA Yuden 日本原子力機構, 量子ビーム応用研究部門, 研究主幹 (10343922)
KANDA Kazuhiro 兵庫県立大学, 高度産業科学技術研究所, 教授 (20201452)
KIMOTO Yugo 宇宙航空研究開発機構, 研究開発本部, 主幹研究員 (60425783)
|
Project Period (FY) |
2013-04-01 – 2018-03-31
|
Project Status |
Completed (Fiscal Year 2017)
|
Budget Amount *help |
¥15,860,000 (Direct Cost: ¥12,200,000、Indirect Cost: ¥3,660,000)
Fiscal Year 2016: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2015: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2014: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2013: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
|
Keywords | 超低軌道宇宙環境 / 原子状酸素 / 窒素分子 / 材料劣化 / 複合効果 / 超低軌道 / 超低地球軌道 / 宇宙環境 / 紫外線 / 高質量分子 / 複合宇宙環境 / 低地球軌道 |
Outline of Final Research Achievements |
The erosion properties of fluorinated polymer exposed by atomic oxygen (AO) and N2 in sub low earth orbit environment were studied. The synergistic effect of AO and Ar (inactive and heavy molecule same as N2) was clearly observed on polyimide which is a reference material of material erosion studies in space. The reaction efficiency of AO increased 3 times compared with the standard reaction efficiency (3.0x10-24 cm3/atoms) by simultaneous Ar bombardment. On the other hand, no synergistic effect of AO and Ar was observed on FEP/Ag films. This result suggests that the reaction path of AO and Ar is independent on fluorinated polymer. It was concluded that N2 collision, as well as AO collision, needs to be evaluated on the erosion of fluorinated polymers in sub-LEO environment.
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Report
(6 results)
Research Products
(108 results)
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[Journal Article] Soft X-ray irradiation effect on the fluorinated DLC film2017
Author(s)
Hiroki Takamatsu, Makoto Okada, Masahito Niibe, XiaoLong Zhou, Kenji Komatsu, Hidetoshi Saito, Hiroki Akasaka, Akihiko Saiga, Koji Tamada, Masahito Tagawa, Kumiko Yokota, Yuichi Furuyama, Kazuhiro Kanda,
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Journal Title
Diamond and Related Materials,
Volume: 79
Pages: 14-20
NAID
Related Report
Peer Reviewed
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[Journal Article] Hyperthermal atomic oxygen beam irradiation effect on the hydrogenated Si-doped DLC film2015
Author(s)
Kengo Kidena, Minami Endo, Hiroki Takamatsu, Ryo Imai, Masahito Niibe, Kumiko Yokota, Masahito Tagawa, Yuichi Furuyama, Keiji Komatsu, Hidetoshi Saitoh, Kazuhiko Kanda
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Journal Title
Trans. Mat. Res. Soc. Japan
Volume: 40
Pages: 353-358
NAID
Related Report
Peer Reviewed
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[Presentation] Accelerating effect of atomic oxygen-induced polyimide degradation due to simultaneous collision of chemically inert molecules2017
Author(s)
Kazuki Kita, Yusuke Fujimoto, Yuki Yamasaki, Minoru Iwata, Kumiko Yokota, Masahito Tagawa,
Organizer
31st International Symposium on Space Technology and Science, June 3-9, 2017, Matsuyama, Japan
Related Report
Int'l Joint Research
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