Enhanced efficiency of self-healing of Cr2AlC

H. J. Yang; X. H. Shao; Y. T. Pei; Z. F. Zhang; J. Th. M. De Hosson

doi:10.1016/j.matlet.2018.05.038

Enhanced efficiency of self-healing of Cr2AlC

H. J. Yang, X. H. Shao, Y. T. Pei, Z. F. Zhang, J. Th. M. De Hosson^*

^*Corresponding author voor dit werk

Advanced Production Engineering

Onderzoeksoutput: Article › Academic › peer review

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A method for a significant improvement of the self-healing efficiency of Cr2AlC ceramic via pre-oxidation is presented. Micro-notches were made with the focused ion beam technique on specimens with a preexisting oxides scale followed by an oxidation healing treatment. An interesting finding is that in the former case the notches are more effectively healed by producing a dense Al2O3 layer than the counterpart specimens without a pre-existing scale. An explanation for this phenomenon is provided based transmission electron microscopy revealing a transition layer between Cr2AlC and Al2O3 with a gradient distribution of chemical composition. (C) 2018 Elsevier B.V. All rights reserved.

Originele taal-2	English
Pagina's (van-tot)	51-54
Aantal pagina's	4
Tijdschrift	Materials Letters
Volume	227
DOI's	https://doi.org/10.1016/j.matlet.2018.05.038
Status	Published - 15-sep.-2018

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10.1016/j.matlet.2018.05.038

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@article{29fd7d2950864467b78099832604d1ed,

title = "Enhanced efficiency of self-healing of Cr2AlC",

abstract = "A method for a significant improvement of the self-healing efficiency of Cr2AlC ceramic via pre-oxidation is presented. Micro-notches were made with the focused ion beam technique on specimens with a preexisting oxides scale followed by an oxidation healing treatment. An interesting finding is that in the former case the notches are more effectively healed by producing a dense Al2O3 layer than the counterpart specimens without a pre-existing scale. An explanation for this phenomenon is provided based transmission electron microscopy revealing a transition layer between Cr2AlC and Al2O3 with a gradient distribution of chemical composition. (C) 2018 Elsevier B.V. All rights reserved.",

keywords = "Electron microscopy, Diffusion, Defects, Alumina scale, Self-healing, Oxidation, TEMPERATURE OXIDATION BEHAVIOR, OXIDE-SCALE, TI2ALC, CERAMICS, AIR, TI3ALC2",

author = "Yang, {H. J.} and Shao, {X. H.} and Pei, {Y. T.} and Zhang, {Z. F.} and {De Hosson}, {J. Th. M.}",

year = "2018",

month = sep,

day = "15",

doi = "10.1016/j.matlet.2018.05.038",

language = "English",

volume = "227",

pages = "51--54",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "ELSEVIER SCIENCE BV",

}

TY - JOUR

T1 - Enhanced efficiency of self-healing of Cr2AlC

AU - Yang, H. J.

AU - Shao, X. H.

AU - Pei, Y. T.

AU - Zhang, Z. F.

AU - De Hosson, J. Th. M.

PY - 2018/9/15

Y1 - 2018/9/15

N2 - A method for a significant improvement of the self-healing efficiency of Cr2AlC ceramic via pre-oxidation is presented. Micro-notches were made with the focused ion beam technique on specimens with a preexisting oxides scale followed by an oxidation healing treatment. An interesting finding is that in the former case the notches are more effectively healed by producing a dense Al2O3 layer than the counterpart specimens without a pre-existing scale. An explanation for this phenomenon is provided based transmission electron microscopy revealing a transition layer between Cr2AlC and Al2O3 with a gradient distribution of chemical composition. (C) 2018 Elsevier B.V. All rights reserved.

AB - A method for a significant improvement of the self-healing efficiency of Cr2AlC ceramic via pre-oxidation is presented. Micro-notches were made with the focused ion beam technique on specimens with a preexisting oxides scale followed by an oxidation healing treatment. An interesting finding is that in the former case the notches are more effectively healed by producing a dense Al2O3 layer than the counterpart specimens without a pre-existing scale. An explanation for this phenomenon is provided based transmission electron microscopy revealing a transition layer between Cr2AlC and Al2O3 with a gradient distribution of chemical composition. (C) 2018 Elsevier B.V. All rights reserved.

KW - Electron microscopy

KW - Diffusion

KW - Defects

KW - Alumina scale

KW - Self-healing

KW - Oxidation

KW - TEMPERATURE OXIDATION BEHAVIOR

KW - OXIDE-SCALE

KW - TI2ALC

KW - CERAMICS

KW - AIR

KW - TI3ALC2

U2 - 10.1016/j.matlet.2018.05.038

DO - 10.1016/j.matlet.2018.05.038

M3 - Article

SN - 0167-577X

VL - 227

SP - 51

EP - 54

JO - Materials Letters

JF - Materials Letters

ER -

Enhanced efficiency of self-healing of Cr2AlC

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