SiOx top layer on DLC films for atomic oxygen and ozone corrosion protection in aerospace applications
Tipo
Artigo
Data de publicação
2021
Periódico
Materials Research
Citações (Scopus)
4
Autores
Ferreira L.L.
Radi P.A.
da Silva Sobrinho A.S.
Vieira L.
Leite D.M.G.
Recco A.A.C.
Reis D.A.P.
Massi M.
Radi P.A.
da Silva Sobrinho A.S.
Vieira L.
Leite D.M.G.
Recco A.A.C.
Reis D.A.P.
Massi M.
Orientador
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Resumo
© 2021 Universidade Federal de Sao Carlos. All rights reserved.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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Assuntos Scopus
Critical load , Diamond like carbon , DLC thin films , Low earth orbit satellites , Orders of magnitude , Oxygen plasmas , Research and development , Technological barriers