| 地面寿命试验中离子推力器表面的溅射沉积量计算 |
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| 引用本文： | 张天平,陈继巍,李小平,陈娟娟. 地面寿命试验中离子推力器表面的溅射沉积量计算[J]. 航天器环境工程, 2011, 28(5): 436-439 |
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| 作者姓名： | 张天平 陈继巍 李小平 陈娟娟 |
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| 作者单位： | 1.兰州物理研究所 真空低温技术与物理重点实验室 |
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| 基金项目： | 真空低温技术与物理重点实验室基金项目支持(编号:9140C550403105504) |
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| 摘 要： | 有效降低溅射沉积影响是离子推力器地面寿命试验需要解决的重要技术问题。文章建立了真空舱壁上溅射物沉积到离子推力器表面的计算模型。应用该模型计算了LIPS-200推力器在TS-7真空舱中进行寿命试验的背溅射沉积情况，对钛（Ti）材料和石墨（C）材料内衬，背溅射沉积量分别为0.79 μm/kh和0.20 μm/kh。对比美国NSTAR和NEXT离子推力器寿命试验中的背溅射沉积量测量数据，文章中的计算结果表明，LIPS-200推力器的表面沉积污染在可接受的范围。
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| 关 键 词： | 背溅射；数学模型；溅射沉积；离子推力器；寿命试验 |
| 收稿时间： | 2011-05-06 |
| 修稿时间： | 2011-09-29 |
Calculation of backsputter depositon on LIPS-200 ion thruster in the life test |
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| Zhang Tianping,Chen Jiwei,Li Xiaoping and Chen Juanjuan. Calculation of backsputter depositon on LIPS-200 ion thruster in the life test[J]. Spacecraft Environment Engineering, 2011, 28(5): 436-439 |
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| Authors: | Zhang Tianping Chen Jiwei Li Xiaoping Chen Juanjuan |
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| Affiliation: | 1.Science and Technology on Vacuum & Cryogenics Technology and Physics Laboratory, Lanzhou Institute of Physics |
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| Abstract: | In the life test of ion thrusters on the ground,it is very important to find a way of depressing the sputter deposition effect on the ion thruster.In this paper,a mathematical model is built for studying the ion thruster backsputter deposition.The backsputter deposition on LIPS-200 ion thruster under its life test in the TS-7 vacuum chamber is numerically simulated by using this model.The resulted backsputter depositions are 0.79 μm/kh and 0.20 μm/kh for titanium and graphite lining,respectively.Comparing to the backsputter deposition data measured in the life tests for the ion thruster by NSTAR and NEXT of the US,it can be concluded that the backsputter deposition effect on the LIPS-200 ion thruster is in an acceptable level. |
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| Keywords: | backsputter mathematical model sputter deposition ion thruster life test |
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