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Ferrari, A. |
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Schimpf, Christian |
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Dunser, M. |
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Thomas, Eric |
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Gecse, Zoltan |
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Tsrunchev, Peter |
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Della Ricca, Giuseppe |
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Cios, Grzegorz |
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Hohlmann, Marcus |
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Dudarev, A. |
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Mascagna, V. |
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Santimaria, Marco |
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Poudyal, Nabin |
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Piozzi, Antonella |
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Mørtsell, Eva Anne |
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Jin, S. |
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Noel, Cédric |
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Fino, Paolo |
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Mailley, Pascal |
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Meyer, Ernst |
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Zhang, Qi |
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Pfattner, Raphael | Brussels |
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Kooi, Bart J. |
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Babuji, Adara |
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Pauporte, Thierry |
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Sahu, R.
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Publications (5/5 displayed)
- 2023Interface engineering of carbon fiber composites using CNT: A review
- 2022Exploring the studies of charge transportation of an aromatic acid based Co(II)-Metallogel scaffold fabricated Schottky devicecitations
- 2022Exploring an aromatic dicarboxylic acid-grafted supramolecular Cd (II)-metallogel: The mechanically flexible stuff for achieving MoS 2 , MoSe 2 , WS 2 , GO, and h(BN) 2D nanosheets-dispersed versatile supramolecular gel-nano compositescitations
- 2021On the fracture behavior of Cr 2 AlC coatingscitations
- 2020Cd-Based Metallohydrogel Composites with Graphene Oxide, MoS 2 , MoSe 2 , and WS 2 for Semiconducting Schottky Barrier Diodescitations
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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