Ability of a MoSi2 coating to resist erosion-corrosion from the impact of atomic oxygen
文献类型：期刊论文
| 作者 | Liu, Jianxue1; Wang, Na1; Sun, Yanbo1; Yan, Xubo1; Wei, Shi1; Kang, Li1; Du, Baoxian1; Yang, Wenwen2; Ma, Ke3 |
| 刊名 | CERAMICS INTERNATIONAL
 |
| 出版日期 | 2025 |
| 卷号 | 51期号:2页码:1821-1830 |
| 关键词 | Atomic oxygen MoSi2 Coating Erosion yield Spacecraft |
| ISSN号 | 0272-8842 |
| DOI | 10.1016/j.ceramint.2024.11.158 |
| 通讯作者 | Liu, Jianxue(1654060931@qq.com) ; Ma, Ke() |
| 英文摘要 | Atomic oxygen (AO), in the residual atmosphere of low-Earth-orbit space, may violently collide with spacecraft at a relative speed of up to 8 km/s and an impact energy of nearly 5 eV/atom. These collisions can lead to a series of physical and chemical reactions that may result in increased sputtering-erosion and corrosion of the exposed surface with performance degradation. This work examined the behavior of MoSi2, a commonly used coating, when exposed to AO using a ground-based space environment simulator. The erosion-corrosion kinetics and evolution of the microstructure and element distributions were analyzed. After MoSi2 was subjected to a total gas fluence of 9.72 x 1022 atoms/cm2 in 675 h, the erosion yield reached an exceptionally low value of 10-28 cm3/ atom, indicative of its superior AO resistance, and XRD, SEM, XPS and EPMA were applied to analyze the phase transition of the coating surface: first it was released of adsorbed gas molecules and contaminants on the coating surface; then outside Mo and Si atoms were also sputtered, and the remaining Mo and Si atoms were gradually oxidized; finally, a continuous protective oxide film was generated which effectively resisting AO collisions. After AO impact, an ultrathin defensive granular oxide layer of MoO3 and SiO2 generated from the original smooth MoSi2 coating. Density functional theory calculations were conducted to clarify the thermodynamic and electronic structure mechanisms underlying the AO oxidation of the MoSi2 coating. |
| 资助项目 | Key Project of Beijing Polytechnic College[BGY2020KY-22Z] |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001407690000001 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | Key Project of Beijing Polytechnic College |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Liu, Jianxue; Ma, Ke |
| 作者单位 | 1.Aerosp Res Inst Mat & Proc Technol, Beijing 100076, Peoples R China 2.Beijing Polytech Coll, Sch Basic Educ, Beijing 100042, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Jianxue,Wang, Na,Sun, Yanbo,et al. Ability of a MoSi2 coating to resist erosion-corrosion from the impact of atomic oxygen[J]. CERAMICS INTERNATIONAL,2025,51(2):1821-1830. |
| APA | Liu, Jianxue.,Wang, Na.,Sun, Yanbo.,Yan, Xubo.,Wei, Shi.,...&Ma, Ke.(2025).Ability of a MoSi2 coating to resist erosion-corrosion from the impact of atomic oxygen.CERAMICS INTERNATIONAL,51(2),1821-1830. |
| MLA | Liu, Jianxue,et al."Ability of a MoSi2 coating to resist erosion-corrosion from the impact of atomic oxygen".CERAMICS INTERNATIONAL 51.2(2025):1821-1830. |
入库方式： OAI收割
来源：金属研究所
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