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Ultra-Hard Diamene Films on Silicon Carbide for Mechanical Applications


Title: Ultra-Hard Diamene Films on Silicon Carbide for Mechanical Applications

Authors: Filippo Cellini, Francesco Lavini, and Elisa Riedo

DOI: 10.33599/nasampe/s.19.1494

Abstract: Similarly to graphite, atomically thin graphene films are known to be extremely flexible, exhibit a large in-plane stiffness (~1TPa), and be quite soft in the direction perpendicular to the graphene layers (~30 GPa). However, contrary to expectations, we found that at room temperature under pressure an epitaxial graphene film composed of buffer layer plus one graphene layer on SiC(0001) behaves at the nanoscale as a diamond-hard coating, which we named diamene. This ultra-thin and ultra-hard film exhibits exceptional mechanical responses to nano-indentation, equal, or even superior, to those of a CVD diamond film. Here, we review recent advancements in the study of diamene films, towards implementation of diamene coatings in current state-of-the-art mechanical technologies.

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Conference: SAMPE 2019 - Charlotte, NC

Publication Date: 2019/05/20

SKU: TP19--1494

Pages: 10

Price: FREE

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