JAXA Repository / AIREX 未来へ続く、宙(そら)への英知
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titleAtomic oxygen-induced erosion of polymers under surface charging
Other Title表面帯電時における原子状酸素誘起高分子エロージョン
Author(jpn)横田 久美子; 田川 雅人
Author(eng)Yokota, Kumiko; Tagawa, Masahito
Author Affiliation(jpn)神戸大学 工学部; 神戸大学 工学部
Author Affiliation(eng)Kobe University Faculty of Engineering; Kobe University Faculty of Engineering
Issue Date2005-03-31
PublisherJapan Aerospace Exploration Agency (JAXA)
Publication title第1回宇宙環境シンポジウム報告書
Proceedings of the First Spacecraft Environment Symposium
Start page156
End page162
Publication date2005-03-31
AbstractEffect of surface charging on the atomic oxygen-induced erosion of polyimide was investigated. Polyimide sample was spin-coated on the quartz crystal microbalance (QCM), and mass loss of the film was directly measured from the resonant frequency shift of QCM during atomic oxygen exposure. The experiment was carried out using the specially designed QCM, which allowed a sample bias voltage up to 1,500 V during resonant frequency measurements. From the experimental results, it is confirmed that the erosion rates of polyimide at +/- 1,500 V were almost identical to that at grounded. It was, thus, concluded that the polyimide erosion by atomic oxygen is hardly affected by surface charging. Similar conclusion was also obtained with polysulfone. This conclusion was inconsistent with that reported by King et al. Discrepancy of the experimental results would be due to the surface ionization yield of reaction products under surface charging.
DescriptionJAXA Special Publication
Keywordssurface charging; oxygen atom; LEO; polyimide; erosion; frequency shift; microbalance; resonant frequency; 表面放電; 酸素原子; LEO; ポリイミド; 腐食; 周波数シフト; マイクロバランス; 共鳴周波数
Document TypeConference Paper
JAXA Category特別資料
Report NoJAXA-SP-04-010

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