TY - GEN
T1 - Ultra-hard diamene films on silicon carbide for mechanical applications
AU - Cellini, Filippo
AU - Lavini, Francesco
AU - Riedo, Elisa
N1 - Funding Information:
The Authors acknowledge the support from the Office of Basic Energy Sciences of the US Department of Energy (grant no. DE-SC0018924). Epitaxial graphene samples used in the experiments described herein have been prepared by Professor Walt de Heer at the Georgia Institute of Technology and Dr. Claire Berger at the Institut Néel, CNRS-University Grenoble-Alpes. This research would not have been possible without their contribution.
Publisher Copyright:
Copyright 2019. Used by the Society of the Advancement of Material and Process Engineering with permission.
PY - 2019
Y1 - 2019
N2 - 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.
AB - 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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U2 - 10.33599/nasampe/s.19.1494
DO - 10.33599/nasampe/s.19.1494
M3 - Conference contribution
AN - SCOPUS:85068790049
T3 - International SAMPE Technical Conference
BT - SAMPE Conference and Exhibition
A2 - Ahlstrom, Kevin
A2 - Anderson, Jacob Preston
A2 - Beckwith, Scott
A2 - Becnel, Andrew Craig
A2 - Biermann, Paul Joseph
A2 - Buchholz, Matt
A2 - Cates, Elizabeth
A2 - Gardner, Brian
A2 - Harris, Jim
A2 - Knight, Michael J.
A2 - Reyes-Villanueva, German
A2 - Scarborough, Stephen E.
A2 - Sears, Phil
A2 - Thomas, James
A2 - Thostenson, Erik T.
PB - Soc. for the Advancement of Material and Process Engineering
T2 - SAMPE 2019 Conference and Exhibition
Y2 - 20 May 2019 through 23 May 2019
ER -