| 姜海富,张汉宇,姜利祥,柴丽华.石墨烯薄膜原子氧剥蚀行为及电阻特性[J].装备环境工程,2020,17(3):39-44. JIANG Hai-fu,ZHANG Han-yu,JIANG Li-xiang,CHAI Li-hua.Atomic Oxygen Erosion Behavior and Resistance Characteristic of Graphene Film[J].Equipment Environmental Engineering,2020,17(3):39-44. |
| 石墨烯薄膜原子氧剥蚀行为及电阻特性 |
| Atomic Oxygen Erosion Behavior and Resistance Characteristic of Graphene Film |
| 投稿时间：2019-08-08 修订日期：2019-09-08 |
| DOI：10.7643/issn.1672-9242.2020.03.007 |
| 中文关键词: 石墨烯 原子氧 传感器 反应率 |
| 英文关键词:graphene atomic oxygen sensor erosion yield |
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| 中文摘要: |
| 目的 研究石墨烯薄膜在原子氧空间环境的适应性，为其在航天器上应用提供参考。方法 采用刮涂法制备石墨烯薄膜，将石墨烯薄膜材料及石墨烯电阻传感器置于微波源原子氧设备内开展原子氧试验，原子氧剂量分别为3.0×1020atoms/cm2和7.5×1020atoms/cm2，研究薄膜表面形貌、结构、成分及电阻性能的变化。结果 采用刮涂法可制备氧含量较低的石墨烯薄膜，原子氧剂量为7.5×1020atoms/cm2情况下，石墨烯薄膜的厚度损失为5.3 μm，原子氧反应率为7.14×10-25atoms/cm3。原子氧作用后，石墨烯薄膜中碳原子无序程度增大，C—O、—COOH官能团含量降低，C=O官能团含量增加。石墨烯电阻传感器的R0/R比值随原子氧剂量增加线性降低，0.8 μm厚度薄膜可探测最大原子氧剂量为5×1019atoms/cm2，增加薄膜厚度有望提高传感器的使用寿命。结论 得到了石墨烯薄膜厚度损失、原子氧反应率、微观结构及电阻特性的变化规律，可为石墨烯薄膜的空间应用提供技术支撑。 |
| 英文摘要: |
| The paper aims to study the space atomic oxygen (AO) environment adaptability of graphene film, to provide reference for its space applications. In this paper, the graphene film was fabricated by the blade-coating method. The AO irradiation test was conducted with microwave source AO simulation facility containing graphene film material and graphene resistance sensor and the AO fluence was 3.0×1020atoms/cm2 and7.5×1020atoms/cm2, respectively. The variations in surface morphology, surface composition, and resistance properties were investigated. It was found that low oxygen content graphene film can be fabricated by the blade-coating method. The film thickness loss was 5.3 μm and the atomic irradiation erosion yield was no more than 7.14×10-25 atoms/cm3 when the AO fluence was 7.5×1020atoms/cm2. The intensity of C—O and —COOH peak significantly decreased, and C==O peak increased obviously after AO exposure, indicating disorder increase of carbon atom. The resistance data showed a linear relationship between R0/R and AO fluence, the maximum AO detect fluence can reach 5×1019atoms/cm3 when the film thickness was 0.8 μm. Increase of film thickness was expected to improve service life of the sensor. The thickness loss, AO erosion yield, film structure, and resistance characteristic of graphene film are obtained, which could provide technical support for the space application of graphene film. |
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