Design properties for state-of-the-art thermal control materials for manned space vehicles in LEO

Babel, H. W.; Jones, Cherie; David, Kaia E.

doi:10.1016/s0094-5765(96)00112-9

Cited by 12 publications

(7 citation statements)

References 2 publications

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“…Therefore the role of optical properties is critical to maintain thermal control of the whole system and cannot be ignored for optimum performance of spacecraft 25 . The severity of the impact of space environment on materials and coatings can be minimized by controlling the equilibrium temperature of the spacecraft by solar absorptance (α s ) and infrared emittance (ε) [26][27][28] . Anodization is an 29 .…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Electrodeposited Aluminum Oxide Thin Films

Majid¹,

Riaz²,

Akram³

et al. 2013

Proceedings of the 2013 International Conference on Advanced Computer Science and Electronics Information

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-Aluminum Oxide (Al 2 O 3 ) deposition is being sought for application in space / aerospace as a barrier coating. Al 2 O 3 not only changes the mechanical properties of the aluminum based alloys, it acts as a barrier for harmful radiations. Ionizing radiations are harmful to electronic components, which runaway due to extra charge carriers being produced, used in the space vehicles. We are employing electro-deposition along with sol-gel deposition in order to produce these coatings. Both of the techniques are simple, cheap and scalable. The prepared films are characterized by Scanning Electron Microscopy (SEM), Atomic Force Microscopy (AFM) and X-Ray Diffraction (XRD) for their structural / microstructural properties. In this paper, these properties are correlated to the deposition conditions in order to optimize the conditions for the applications mentioned above. The initial results being presented here are very encouraging regarding the smoothness of the films and the grain / particle size achieved so far.

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Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Electrodeposited Aluminum Oxide Thin Films

Majid¹,

Riaz²,

Akram³

et al. 2013

Proceedings of the 2013 International Conference on Advanced Computer Science and Electronics Information

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“…Anodizing, an electrochemical conversion process (Brown et al, 1993), is recommended for all exposed aluminum hardware on spacecrafts except for some radiators that have extremely low absorptance-to-emittance ratio (a/1) requirements. It provides corrosion resistance on Earth, resistance to AO attack in space and reduction in spectral reflection (Babels et al, 1996;Goueffon et al, 2009). The anodized coating is integral with their substrate so that debonding from the substrate does not occur easily.…”

Section: Anodizing Surface Treatmentmentioning

confidence: 99%

“…One has to depend on various thermal coatings in the form of special paints, films and surface treatments to maintain the operating temperature of its equipment (Gilmore, 1994). Many anodized coatings along with their different variants have been in use for space applications (Babels et al, 1996;Goueffon et al, 2009). Space objects orbiting in LEO experience atomic oxygen (AO) attack, ultraviolet radiations, impact of meteoroids and other debris, spallation, plasma and high-vacuum effects, contamination and the thermal cycling.…”

Section: Introductionmentioning

confidence: 99%

Outgassing studies on thermal control coatings for micro‐satellites

Joshi

2011

Aircraft Engineering and Aerospace Technology

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Purpose -With the advent of micro-satellites technology, passive thermal controls in the form of surface coatings have become important for onboard thermal management. The thermal coatings, however, suffer outgassing and mass loss due to their direct exposure to harsh thermal environment and high vacuum in space. The purpose of this paper is to discuss testing and evaluation on outgassing of AA6061-T6 specimen surfaces treated with various types of anodized coatings of different thicknesses and the related mass loss before and after thermal exposure. Design/methodology/approach -Samples of chromic acid, polytetrafluroethylene polymer, and black-and brown-colour anodized aluminum coupons were subjected to high vacuum (,1 £ 10 2 6 mbar), before and after thermal baking at 1208C. Spectrum analysis of the outgassed material to know their quantities and proportion was conducted subsequently using a Quadrupole mass analyzer. Findings -The surface coatings under study complied with the spacecraft requirements for the mass loss of less than 1 percent of the total mass of the coating material used for that surface. The mass spectrum analysis of the outgassed material indicated that the majority of the coating mass loss was on account of water vapours and organic solvents like ethylene. Practical implications -These results provided a good insight into the reliability of the coating materials studied and the bonding between the aluminum substrates and the coatings. Originality/value -The coatings and the technology needed for their application on aluminum are readily available. The present work on outgassing and mass loss in a simulated space environment will provide useful insight on their usage for micro-satellites.

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“…With the development of space science and technology, geosynchronous orbit satellites are being developed with light weight, long life and high reliability. 1,2 Thermal control coating is a main passive thermal control means to ensure the temperature balance of the satellite, [3][4][5] guaranteeing the highly reliable operation of the satellite. Therefore, it is desired to develop a novel thermal control coating with light weight and high space stability to improve the service life of satellites.…”

Section: Introductionmentioning

confidence: 99%

Study of resistance performance of Al₂O₃–ZnO–Y₂O₃thermal control coating exposed to vacuum-ultraviolet irradiation

Kang

Qin

et al. 2022

RSC Adv.

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Design properties for state-of-the-art thermal control materials for manned space vehicles in LEO

Cited by 12 publications

References 2 publications

Preparation and Characterization of Electrodeposited Aluminum Oxide Thin Films

Preparation and Characterization of Electrodeposited Aluminum Oxide Thin Films

Outgassing studies on thermal control coatings for micro‐satellites

Study of resistance performance of Al₂O₃–ZnO–Y₂O₃thermal control coating exposed to vacuum-ultraviolet irradiation

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Design properties for state-of-the-art thermal control materials for manned space vehicles in LEO

Cited by 12 publications

References 2 publications

Preparation and Characterization of Electrodeposited Aluminum Oxide Thin Films

Preparation and Characterization of Electrodeposited Aluminum Oxide Thin Films

Outgassing studies on thermal control coatings for micro‐satellites

Study of resistance performance of Al2O3–ZnO–Y2O3thermal control coating exposed to vacuum-ultraviolet irradiation

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Study of resistance performance of Al₂O₃–ZnO–Y₂O₃thermal control coating exposed to vacuum-ultraviolet irradiation