Spontaneously intermixed Al-Mg barriers enable corrosion-resistant Mg/SiC multilayer coatings

Soufli, Regina; Fernandez-Perea, Monica; Baker, Sherry L.; Robinson, Jeff C.; Alameda, Jennifer; Walton, Christopher C.

doi:10.1063/1.4737649

Title: Spontaneously intermixed Al-Mg barriers enable corrosion-resistant Mg/SiC multilayer coatings

Journal Article · Tue Jul 24 00:00:00 EDT 2012 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4737649· OSTI ID:1266666

Soufli, Regina ^[1]; Fernandez-Perea, Monica ^[2]; Baker, Sherry L. ^[1]; Robinson, Jeff C. ^[1]; Alameda, Jennifer ^[1]; Walton, Christopher C. ^[1]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Consejo Superior de Investigaciones Cientificas, Madrid (Spain)

Magnesium/silicon carbide (Mg/SiC) has the potential to be the best-performing reflective multilayercoating in the 25–80 nm wavelength region but suffers from Mg-related corrosion, an insidious problem which completely degrades reflectance. We have elucidated the origins and mechanisms of corrosion propagation within Mg/SiC multilayers. Based on our findings, we have demonstrated an efficient and simple-to-implement corrosion barrier for Mg/SiC multilayers. In conclusion, the barrier consists of nanometer-scale Mg and Al layers that intermix spontaneously to form a partially amorphous Al-Mg layer and is shown to prevent atmospheric corrosion while maintaining the unique combination of favorable Mg/SiC reflective properties.

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1266666

Report Number(s):: LLNL-JRNL-561992

Journal Information:: Applied Physics Letters, Vol. 101, Issue 4; ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 25 works

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