Thermal stability enhancement of Cr2AlC coatings on Zr by utilizing a double layer diffusion barrier

Stanislav Mráz, Miléna Tyra, Moritz to Baben, Marcus Hans, Xiang Chen, Friederike Herrig, Konstantina Lambrinou, Jochen M. Schneider

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Decomposition of Cr2AlC deposited onto a Zr substrate and vacuum-annealed is observed at 800 °C as Al diffuses from the MAX phase into the Zr substrate. A double layer of ZrN and AlN has been predicted by CALPHAD calculations to act as diffusion barrier between the Zr substrate and Cr2AlC. Experimental thermal stability investigations corroborate this prediction by confirming that the proposed double layer diffusion barrier coatings suppress the decomposition of Cr2AlC for one hour at temperatures of up to 1000 °C.

Original languageEnglish
Pages (from-to)1119-1124
Number of pages6
JournalJournal of the European Ceramic Society
Volume40
Issue number4
Early online date17 Oct 2019
DOIs
Publication statusPublished - 1 Apr 2020

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