Regensburg 2013 – wissenschaftliches Programm
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MM: Fachverband Metall- und Materialphysik
MM 23: Topical Session: Combinatorial Materials Science II
MM 23.1: Topical Talk
Dienstag, 12. März 2013, 11:45–12:15, H25
A combinatorial materials science approach to the development of new functional thin film materials — •Ulf Jansson1, Fang Mao1, Tomas Nyberg2, Urban Wiklund2, and Mattias Klintenberg3 — 1Department of Chemistry-Ångström, Uppsala University, Sweden — 2Department of Engineering Science, Uppsala University, Sweden — 3Department of Physics and Astronomy, Uppsala University, Sweden
Combinatorial materials science (CMS) enables a rapid discovery of new materials for various applications. Compared with conventional methods, CMS is a powerful tool for time-saving development of new materials. This paper will present a platform for CMS including rapid methods for theoretical modelling, sputtering of gradient films, analysis equipment as well as tools to evaluate mechanical, tribological and electrical properties.
Two examples of screening for new materials will be presented. The first is rapid theoretical screening of M-B-C materials (M=early transition metal) for wear-resistant coatings where new phases based on e.g. tungsten give improved properties. The other example is sliding electrical contacts which must combine low resistivity and contact resistance with low wear rate and friction and high corrosion resistance, a combination of properties which is very difficult to meet simultaneously. We have initiated studies of Ag-based alloys, Ag-M-X, (M and X = selected metals and nonmetals) and with CMS demonstrated that addition of Al together with other metals can increase hardness and reduce friction but still maintain good electric properties.