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| Ferrari, A. |
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| Schimpf, Christian |
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| Gecse, Zoltan |
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| Mailley, Pascal |
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| Meyer, Ernst |
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| Pfattner, Raphael | Brussels |
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Stelzer, B.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2023Search for heavy, long-lived, charged particles with large ionisation energy loss in $pp$ collisions at $%5Csqrt{s} = 13~%5Ctext{TeV}$ using the ATLAS experiment and the full Run 2 datasetcitations
- 2021On the fracture behavior of Cr 2 AlC coatingscitations
- 2013Searches for heavy long-lived sleptons and $%5Cit{R}$-hadrons with the ATLAS detector in $%5Cit{pp}$ collisions at $%5Csqrt{s}=7$ TeVcitations
- 2013ATLAS search for new phenomena in dijet mass and angular distributions using $%5Cit{pp}$ collisions at $ %5Csqrt{s}=7 $ TeVcitations
- 2013Searches for heavy long-lived sleptons and R-hadrons with the ATLAS detector in pp collisions at root s=7 TeVcitations
- 2010Search for Quark Contact Interactions in Dijet Angular Distributions in $pp$ Collisions at $%5Csqrt{s}$ = 7 TeV Measured with the ATLAS Detectorcitations
- 2006Search for Excited and Exotic Muons in the $%5Cmu+%5Cgamma$ Decay Channel in p-%5Cbar{p}$ Collisions at $%5Csqrt{s}$ = 1.96 TeVcitations
- 2002ATLAS
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article
On the fracture behavior of Cr 2 AlC coatings
Abstract
Bulk MAX phase materials were investigated heavily in the last decades due to their advantageous combination of metallic and ceramic properties. In recent years, MAX phases also gained the interest of the protective coatings community. Cr2AlC is a very promising material, since the crystalline MAX phase can be deposited at comparatively low (550 degrees C) substrate temperatures. Another advantage of the Cr2AlC MAX phase is its self-healing ability. The goal of this investigation was to characterize the fracture toughness of Cr2AlC protective coatings using in situ SEM micro-cantilever tests and to determine the influence of different microstructures on the fracture behavior. Surprisingly, the fracture toughness is only moderately affected by the microstructure of the crystalline samples investigated here, which reveal a fracture toughness ranging from 1.8 +/- 0.1 MPam1/2 to 2.4 +/- 0.2 MPam1/2. In contrast to that, it could be shown that there is a significant increase in fracture toughness for the amorphous coating with identical chemical composition (4.1 +/- 0.5 MPam1/2) of almost twice the fracture toughness compared to the crystalline coatings. The detrimental influence of grain boundaries in the crystalline coating and the lack of grain boundaries in the amorphous sample might explain the formidable fracture toughness. (c) 2021 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). <comment>Superscript/Subscript Available</comment