Nano-scale Si segregation and precipitation in Cr2Al(Si)C MAX phase coatings impeding grain growth during oxidation

Nano-scale Si segregation and precipitation in Cr2Al(Si)C MAX phase coatings impeding grain growth during oxidation

We recently reported that the columnar grain width of Cr2AlC MAX phase coatings increases during oxidation (4 h at 1120°C) by 80%, while for 0.7 at.% Si additions to Cr2AlC, coarsening of only 12% was observed. Here, we use nm scale compositional and microstructural investigations to identify signif...

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Bibliographic Details
Main Authors: K. G. Pradeep, K. Chang, A. Kovács, S. Sen, A. Marshal, René de Kloe, R. E. Dunin-Borkowski, J. M. Schneider
Format: Article
Language:English
Published: Taylor & Francis Group 2019-05-01
Series:Materials Research Letters
Subjects:
MAX phases
self-healing
precipitate
grain boundary
Zener pinning
Online Access:http://dx.doi.org/10.1080/21663831.2019.1572663

Internet

http://dx.doi.org/10.1080/21663831.2019.1572663

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