Survivability of Silicon-Doped Diamond-Like Carbon Films in Energetic Atomic/Molecular Oxygen Beam Environments

Tagawa, Masatoshi; Kishida, Kazuhiro; Yokota, Kumiko; Matsumoto, Koji; Yoshigoe, Akitaka; Teraoka, Yuden; Zhang, Jianming; Minton, Timothy K.

doi:10.1007/978-3-642-30229-9_51

Cited by 3 publications

(2 citation statements)

References 6 publications

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“…Considering the intrinsic stress effects in the substrate, coupling an AO/UV protection layer to the MOB was investigated to impart long lifetime protection from AO erosion. , Layers of titanium oxide (TiOx) and silicon oxide (SiOx) were examined and subsequently deposited. ,− To allow for low processing temperatures required for polymer and composite substrates and to ensure complete conformal coverage of the barrier, PECVD was selected for deposition.…”

Section: Resultsmentioning

confidence: 99%

Complete Atomic Oxygen and UV Protection for Polymer and Composite Materials in a Low Earth Orbit

Smith

Delkowki

Anguita

et al. 2021

ACS Appl. Mater. Interfaces

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With the realization of larger and more complex space installations, an increase in the surface area exposed to atomic oxygen (AO) and ultraviolet (UV) effects is expected, making structural integrity of space structures essential for future development. In a low Earth orbit (LEO), the effects of AO and UV degradation can have devastating consequences for polymer and composite structures in satellites and space installations. Composite materials such as carbon fiber-reinforced polymer (CFRP) or polymer materials such as polyetherimide and polystyrene are widely used in satellite construction for various applications including structural components, thermal insulation, and importantly radio frequency (RF) assemblies. In this paper, we present a multilayered material protection solution, a multilayered protection barrier, that mitigates the effects of AO and UV without disrupting the functional performance of tested assemblies. This multilayered protection barrier deposited via a custom-built plasma-enhanced chemical vapor deposition (PECVD) system is designed so as to deposit all necessary layers without breaking vacuum to maximize the adhesion to the surface of the substrate and to ensure no pinhole erosion is present. In the multilayer solution, a moisture and outgassing barrier (MOB) is coupled with an AO and UV capping layer to provide complete protection.

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Section: Resultsmentioning

confidence: 99%

Complete Atomic Oxygen and UV Protection for Polymer and Composite Materials in a Low Earth Orbit

Smith

Delkowki

Anguita

et al. 2021

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…The main space agencies of the world invest billions of dollars every year in research and development for important projects, such as the building of the international space station, satellite launch vehicles, and many kinds of satellites 1,2 . Among the areas involved in these projects, surface engineering plays an important role, due to the severe conditions that these devices are subjected [3][4][5] . The tribology for space applications has been studied since the1940s, and in 1996 Donnet published an overview on recent tribological studies performed on MoS2 and DLC in ultra-high vacuum (UHV) 6,7 .…”

Section: Introductionmentioning

confidence: 99%

SiOx Top Layer on DLC Films for Atomic Oxygen and Ozone Corrosion Protection in Aerospace Applications

et al. 2021

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Every year, billions of dollars are invested in research and development for space applications, including new systems, new technologies, and new materials. DLC (Diamond-Like Carbon) is a promising material for use in these applications, but its use faces a technological barrier, since it is severely etched by atomic oxygen and ozone. In this study, SiOx-DLC thin films were deposited as a top layer of diamond-like carbon (DLC) films on Ti-6Al-4V substrates to increase resistance against corrosion by atomic oxygen and ozone as well as meet the requirements for use in Low Earth Orbit (LEO) satellites. The corrosion resistance of the films was evaluated using oxygen plasma, and the tribological and mechanical properties were investigated. The SiOx-DLC top layer reduced the corrosion rate two orders of magnitude and increased the critical load from 16.2 ± 1.5 N to 18.4 ± 0.4 N.

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A Synchrotron Radiation Photoelectron Spectroscopic Study on the Oxidation of Si in Diamond-like Carbon Film by Hyperthermal O-atom Beam

Yokota

Tagawa

Yoshigoe

2014

JSA

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Oxidation reaction efficiency of the embedded Si atoms in the diamond-like carbon (DLC) film was studied with a combination of the broad O-atom beam, high-speed chopper wheel and synchrotron radiation photoelectron spectroscopy (SR-PES). The high-speed chopper wheel converted the translational energy distribution of O-atom into spatial distribution on the DLC surface. High spatial and energy resolutions of SR-PES allow studying the difference in oxidation states of Si atoms in different translational energies. It was confirmed that the SiO 2 was formed by the high-energy collision conditions of O-atoms, whereas sub-oxides are formed with the low-energy collisions. The efficiency of SiO 2 formation at 9 eV-collision is evaluated to be 4 times greater than that at 2 eV-collision.

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Survivability of Silicon-Doped Diamond-Like Carbon Films in Energetic Atomic/Molecular Oxygen Beam Environments

Cited by 3 publications

References 6 publications

Complete Atomic Oxygen and UV Protection for Polymer and Composite Materials in a Low Earth Orbit

Complete Atomic Oxygen and UV Protection for Polymer and Composite Materials in a Low Earth Orbit

SiOx Top Layer on DLC Films for Atomic Oxygen and Ozone Corrosion Protection in Aerospace Applications

A Synchrotron Radiation Photoelectron Spectroscopic Study on the Oxidation of Si in Diamond-like Carbon Film by Hyperthermal O-atom Beam

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