Risk evaluation of chemical degradation of materials by high-velocity collision with inert gas molecules in upper atmosphere
Project/Area Number |
23656539
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Research Category |
Grant-in-Aid for Challenging Exploratory Research
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Allocation Type | Multi-year Fund |
Research Field |
Aerospace engineering
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Research Institution | Kobe University |
Principal Investigator |
TAGAWA Masahito 神戸大学, 大学院・工学研究科, 准教授 (10216806)
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Co-Investigator(Kenkyū-buntansha) |
YOKOTA Kumiko 神戸大学, 大学院・工学研究科, 助手 (20252794)
|
Project Period (FY) |
2011 – 2012
|
Project Status |
Completed (Fiscal Year 2012)
|
Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2011: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
|
Keywords | 構造・材料 / 超低軌道惑星軌道環境 / 宇宙環境 / 不活性分子 / 材料劣化 / 原子状酸素 |
Research Abstract |
The possibility of materials erosion induced by heavy inert molecules in space environment was investigated. It was found that the 9 eV N2beam, which is the similar condition in space, was difficult to duplicate inthe laser-detonation facility due todissociation reaction of N2. The heavy inert gas collision in space was successfully simulated by Ar beam with collision energy of 9 eV. The mass-loss of fluoropolymer due to Ar beam exposure was clearlyobserved whereas polyimide did not erode at all. The presence of the heavy inert gas collision-induced erosion was identified and, thus, the necessity of consideration on the material loss of fluoropolymers in super-low altitude region was addressed.
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Report
(3 results)
Research Products
(72 results)
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[Presentation] Extreme ultraviolet emission form a carbon dioxide laser-sustained oxygen plasma2011
Author(s)
Akira Mizutani, Kazuhiro Kishida, Kumiko Yokota, Masahito Tagawa, Hiroyuki Shimamura, Yugo Kimoto, Mayuko Koga, Hiroaki Nishimura,
Organizer
10th International Space Conference, Protection of Materials and Structure in a Space Environment,
Place of Presentation
Okinawa, Japan
Related Report
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[Presentation] Survivability of silicon-doped diamond-like carbon films in energetic atomic/molecular oxygen beam environments2011
Author(s)
Masahito Tagawa, Kazuhiro Kishida, Kumiko Yokota, Koji Matsumoto, Akitaka Yoshigoe, Yuden Teraoka, Jianming Zhang, Timothy K. Minton
Organizer
10th International Space Conference, Protection of Materials and Structure in a Space Environment,
Place of Presentation
Okinawa, Japan
Related Report
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[Presentation] Hydrogen removal from hydrogenated diamond-like carbon films by photon and energetic atomic oxygen exposures2011
Author(s)
Kumiko Yokota, Masahito Tagawa, Koji Matsumoto, Yuichi Furuyama, Akira Kitamura, Kazuhiro Kanda, Mayumi Tode, Akitaka Yoshigoe, Yuden Teraoka
Organizer
10th International Space Conference, Protection of Materials and Structure in a Space Environment,
Place of Presentation
Okinawa, Japan
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[Book] 宇宙機のシステム熱設計2011
Author(s)
金森康郎、増本博光監修、大西晃、杉田寛之
Total Pages
344
Publisher
田川雅人編集、分担執筆および編集.青葉堂
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