Journal
SURFACE & COATINGS TECHNOLOGY
Volume 315, Issue -, Pages 399-407Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2017.02.056
Keywords
Optical coatings; Nanolaminates; Hybrid materials; Tribology; Mechanical properties
Funding
- Le Fonds Quebecois de la Recherche sur la Nature et les Technologies (FRQNT)
- NSERC Multisectorial Industrial Research Chair in Coatings and Surface Engineering (MIC-CSE) program [IRCPJ 433808-11]
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Composite SiO2/SiOCH nanolaminates were deposited on plastic substrates using electron beam evaporation and ion beam assisted chemical vapor deposition processes, respectively. The hybrid mineral/organic SiOCH films were synthesized from an OMCTS precursor, leading to refractive index values similar to that of the pure SiO2. Optical and tribo-mechanical properties of the composite nanolaminates with constant total thickness were studied as a function of the number of SiO2/SiOCH bilayers within the stack. We found that by adjusting the periodicity, one can tailor the mechanical properties of the material, leading to improved scratch resistance witnessed by an increase of the critical load at delamination from 8 N to 11 N. Based on these findings, such nanolaminate material can easily replace monolithic SiO2 layer in interference stacks to enhance the tribological behavior of optical filters. (C) 2017 Elsevier B.V. All rights reserved.
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