In-situ measurement of effect of hyperthermal atomic oxygen exposure on tribological property of ionic liquids

2014 Fiscal Year Final Research Report

• Project/Area Number: 25630036
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Design engineering/Machine functional elements/Tribology
• Research Institution: Okayama University
• Principal Investigator: FUJII Masahiro 岡山大学, 自然科学研究科, 教授 (80209014)
• Co-Investigator(Kenkyū-buntansha): KINOSHITA Hiroshi 岡山大学, 大学院自然科学研究科, 准教授 (50362760)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: イオン液体 / トライボロジー / 低地球軌道 / 超熱原子状酸素

Outline of Final Research Achievements

Recently, since ionic liquids have very low vapor pressure, chemical stability, and proper viscosity, ionic liquids are expected to use lubricated liquids in space facilities. In low Earth orbit, polymer and carbon materials are intensely eroded by hyperthermal atomic oxygen exposure. However, effect of hyperthermal atomic oxygen exposure on tribological property of ionic liquids are unknown. In this study, the effect was investigated using a laser-plasma type hyperthermal atomic oxygen facility. The experimental findings suggested that the tribological property of ionic liquids was not changed by exposure of hyperthermal atomic oxygen with 2.5e20 atoms/cm2.

Free Research Field

機械要素設計・トライボロジー