| 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)
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| 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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