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| Effect of Metal Copper under Atomic Oxygen Irradiation |
| Received:January 20, 2015 Revised:June 15, 2015 |
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| DOI：10.7643/issn.1672-9242.2015.03.013 |
| KeyWord:copper atomic oxygen surface composition solar absorption ratio |
| Author | Institution |
| JIANG Hai-fu |
Science and Technology on Reliability and Environmental Engineering Laboratory， Beijing Institute of Spacecraft Environment Engineering， Beijing ， China |
| LI Sheng-gang |
China Petroleum Pipeline Bureau Southeast Asia， Langfang ， China |
| TIAN Xiu-bo |
State Key Laboratory of Advanced Welding Production Technology， School of Materials Science & Engineering， Harbin Institute of Technology， Harbin ， China |
| CHAI Li-hua |
School of Materials Science & Engineering，Beijing University of Technology， Beijing ， China |
| QIN Wei |
Science and Technology on Reliability and Environmental Engineering Laboratory， Beijing Institute of Spacecraft Environment Engineering， Beijing ， China |
| ZHANG Yong-tai |
Science and Technology on Reliability and Environmental Engineering Laboratory， Beijing Institute of Spacecraft Environment Engineering， Beijing ， China |
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| Abstract: |
| Objective To obtain copper properties data in space atomic oxygen (AO) environment and to enhance the design level of material space environment adaptability. Methods AO irradiation test of copper was conducted using a radio-frequency (RF) source AO simulation facility. The flux was 2.5 × 1016 atoms/cm2·s and the maximum irradiation time in test was 300 min. The variations in surface composition, surface morphology and properties with the increasing irradiation time were investigated in our study. Results After AO exposure, the sample surface became rough and the copper oxidation layer fell off from the sample surface after 300 min irradiation. The mass and solar absorption ratio of copper increased with the increasing irradiation time, the mass increased by 0.035 mg and the maximum solar absorption increment reached 0.07 after 300 min irradiation. In contrast, the spectrum reflectance decreased with increasing irradiation time. In addition, AO could also lead to the increase of hydrophobic property and decrease of friction and wear property. Conclusion AO effect data of metal copper was obtained, which could provide technical support for the space environment effect protection design of spacecraft. |
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