Berlin 2008 – wissenschaftliches Programm
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MM: Fachverband Metall- und Materialphysik
MM 23: Poster session
MM 23.13: Poster
Dienstag, 26. Februar 2008, 14:45–18:00, Poster B
PAC studies of Indium containing MAX phases — •Daniel Jürgens1, Michael Uhrmacher1, Hans Hofsäss1, Jens Röder2, Pawel Wodniecki3, Agniszka Kulinska3, and Michel Barsoum4 — 1II. Physik. Inst., Universität Göttingen, Germany — 2Institut f. phys. Chemie, TU Braunschweig,Germany — 3IFJPAN, 31 - 342 Krakow, Poland — 4Dep. Mat. Science and Eng. Drexel Univ., Philadelphia, USA
Nanolaminated layered ternary carbides and nitrides, the so called MAX phases, have attracted great attention in recent time. By now over 50 compounds are known which feature a unique combination of the best attributes of both metals and high-performance ceramics. This class of materials for instance possesses good electrical and thermal conductivities as well as considerable damage tolerance and temperature oxidation resistance.
The method of perturbed angular correlation (PAC) with implanted 111Indium as probe nuclei is successful in measuring the electric field gradient (EFG) of the A-site by using Indium containing MAX phases like Ti2InC and Zr2InC. These key-compounds provide a kind of fingerprint EFG that can be compared to other MAX phases which have no Indium in their structure. Special attention is payed to investigations of annealing parameters, thermal characteristics and behaviour under isostatic stresses.