posted 27 Jul 2015, 00:39 by info admin
Jon Iversen, Susanne Halkjær, Line Kyhl, Liv Hornekær
Dept. of Physics and Astronomy, Århus University
Inconel 625 is a nickel-chromium based alloy which is highly corrosion and oxidation resistant. This is due to its protecting oxide layer, which forms at the surface, passivating the surface from further chemical attacks. Because of the high content of nickel it is thought possible that graphene can be grown on the surface . It is here shown that, the polycyclic aromatic hydrocarbon coronene, composed of peri-fused bezene rings, can be used to grow a graphene-like coating using physical vapor deposition followed by thermal decomposition. The coating was studied using scanning electron microscopy, Auger electron spectroscopy and Raman spectroscopy. It is also shown that when exposed to concentrated (37%) hydrochloric acid, the graphene coating offer similar or better resistance than the oxide layer.
1. Jayeeta Lahiri, Travis S. Miller, Andrew J. Ross, Lyudmyla Adamska, Ivan I. Oleynik, and Matthias Batzill. Graphene growth and stability at nickel surfaces.
Jon Iversen is a master degree student at the Dept. of Physics and Astronomy at Aarhus University, Denmark. His project is to study the corrosion inhibiting properties of graphene. He received his B.S. Degree in technical physics at Dept. of Physics and Astronomy at Aarhus University (2014), where he worked on Intercalation studies of epitaxial graphene on selected platinum group metals. During his postgraduate education, he studied abroad for half a year at the Dept. of Physics at University of Auckland after which he became an international mentor at Aarhus University. This involved helping international students adjusting both academically and socially to live in Denmark. Besides his studies, he is also working part time at Aarhus Car Auction.