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

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

doi:10.1016/j.jeurceramsoc.2019.10.008

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

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

Research output › peer-review

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 language	English
Article number	40
Pages (from-to)	1119-1124
Number of pages	9
Journal	Journal of the European Ceramic Society
Volume	40
Issue number	4
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2019.10.008
State	Published - Apr 2020

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10.1016/j.jeurceramsoc.2019.10.008

Cite this

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title = "Thermal stability enhancement of Cr2AlC coatings on Zr by utilizing a double layer diffusion barrier",

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.",

keywords = "MAX phase, Diffusion barrier, Metallic substrate, Harsh environment",

author = "Mr{\'a}z Stanislav and Tyra Mil{\'e}na and {to Baben}, Moritz and Hans Marcus and Chen Xiang and Herrig Friederike and Konstantza Lambrinou and Schneider, {Jochen M.}",

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TY - JOUR

T1 - Thermal stability enhancement of Cr2AlC coatings on Zr by utilizing a double layer diffusion barrier

AU - Stanislav, Mráz

AU - Miléna, Tyra

AU - to Baben, Moritz

AU - Marcus, Hans

AU - Xiang, Chen

AU - Friederike , Herrig

AU - Lambrinou, Konstantza

AU - Schneider, Jochen M.

N1 - Score=10

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Y1 - 2020/4

N2 - 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.

AB - 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.

KW - MAX phase

KW - Diffusion barrier

KW - Metallic substrate

KW - Harsh environment

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/37124178

U2 - 10.1016/j.jeurceramsoc.2019.10.008

DO - 10.1016/j.jeurceramsoc.2019.10.008

M3 - Article

SN - 0955-2219

VL - 40

SP - 1119

EP - 1124

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 4

M1 - 40

ER -