| ZHANG Ting-ting,YANG Gui-min,WEI Qiang,LUO Dong-yuan,BAI Yu.Protection Effect of Interlayer Film on Titanium Surface against Micro-debris Impact[J],47(5):15-21 |
| Protection Effect of Interlayer Film on Titanium Surface against Micro-debris Impact |
| Received:February 10, 2018 Revised:May 20, 2018 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2018.05.003 |
| KeyWord:space mciro-debris quasi-honeycomb structure foam structure laser-driven flyer nano-indentation |
| Author | Institution |
| ZHANG Ting-ting |
School of Materials Science and Engineering, Tianjin University, Tianjin , China |
| YANG Gui-min |
School of Materials Science and Engineering, Tianjin University, Tianjin , China |
| WEI Qiang |
School of Materials Science and Engineering, Tianjin University, Tianjin , China |
| LUO Dong-yuan |
School of Materials Science and Engineering, Tianjin University, Tianjin , China |
| BAI Yu |
Beijing Satellite Environment Engineering Research Institute, Beijing , China |
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| Abstract: |
| The work aims to improve surface protection of spacecraft materials against space micro-debris. With high purity titanium as the substrate and ammonium fluoride glycol solution as electrolyte, quasi-honeycomb TiO2 nanotube array interlayer was prepared in anodic oxidation method. Porous foam structure was prepared on the Ti surface using sodium hydroxide solution in the method of alkali-heat-treatment. SiO2 sheet coatings was prepared in sol-gel method on the two kinds of interlayers. Finally, two protective film systems, namely, quasi-honeycomb nanotube array interlayer and foamed porous structure interlayer, formed on the Ti surface. Surface morphology was studied with SEM and ultra DOF 3D stereomicroscope. Impact test of mciro-debris was simulated with laser-driven flyer. Load-depth curves were measured with nano-indenter, mechanical properties of surface were evaluated. The quasi-honeycomb nanotube array interlayer and foamed porous structure interlayer on Ti surface could significantly reduce surface contact stiffness and improve contact deformability under the effect of external force. In case of high velocity impact, the energy generated by high-speed impact could be better absorbed, and certain protective effect was produced under the effect of high-speed impact. Therefore, the composite protective coating systems, i.e., TiO2 nanotube array/SiO2 and porous Ti/SiO2 are prepared on titanium surface, which can effectively improve impact resistance of Ti surface. Structured design of surface film is a helpful exploration of surface protection against space micro-debris, and is of great significance to protection against space micro-debris. |
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